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Gson (Gson 1.7.1 API)
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SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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com.google.gson</FONT>
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<BR>
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Class Gson</H2>
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<PRE>
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
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<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.google.gson.Gson</B>
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</PRE>
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<DL>
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<DT><PRE>public final class <B>Gson</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
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</PRE>
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<P>
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This is the main class for using Gson. Gson is typically used by first constructing a
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Gson instance and then invoking <A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object)"><CODE>toJson(Object)</CODE></A> or <A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.Class)"><CODE>fromJson(String, Class)</CODE></A>
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methods on it.
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<p>You can create a Gson instance by invoking <code>new Gson()</code> if the default configuration
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is all you need. You can also use <A HREF="../../../com/google/gson/GsonBuilder.html" title="class in com.google.gson"><CODE>GsonBuilder</CODE></A> to build a Gson instance with various
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configuration options such as versioning support, pretty printing, custom
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<A HREF="../../../com/google/gson/JsonSerializer.html" title="interface in com.google.gson"><CODE>JsonSerializer</CODE></A>s, <A HREF="../../../com/google/gson/JsonDeserializer.html" title="interface in com.google.gson"><CODE>JsonDeserializer</CODE></A>s, and <A HREF="../../../com/google/gson/InstanceCreator.html" title="interface in com.google.gson"><CODE>InstanceCreator</CODE></A>s.</p>
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<p>Here is an example of how Gson is used for a simple Class:
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<pre>
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Gson gson = new Gson(); // Or use new GsonBuilder().create();
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MyType target = new MyType();
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String json = gson.toJson(target); // serializes target to Json
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MyType target2 = gson.fromJson(json, MyType.class); // deserializes json into target2
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</pre></p>
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<p>If the object that your are serializing/deserializing is a <code>ParameterizedType</code>
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(i.e. contains at least one type parameter and may be an array) then you must use the
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<A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.reflect.Type)"><CODE>toJson(Object, Type)</CODE></A> or <A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.reflect.Type)"><CODE>fromJson(String, Type)</CODE></A> method. Here is an
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example for serializing and deserialing a <code>ParameterizedType</code>:
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<pre>
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Type listType = new TypeToken<List<String>>() {}.getType();
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List<String> target = new LinkedList<String>();
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target.add("blah");
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Gson gson = new Gson();
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String json = gson.toJson(target, listType);
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List<String> target2 = gson.fromJson(json, listType);
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</pre></p>
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<p>See the <a href="https://sites.google.com/site/gson/gson-user-guide">Gson User Guide</a>
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for a more complete set of examples.</p>
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<P>
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<P>
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<DL>
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<DT><B>Author:</B></DT>
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<DD>Inderjeet Singh, Joel Leitch</DD>
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<DT><B>See Also:</B><DD><A HREF="../../../com/google/gson/reflect/TypeToken.html" title="class in com.google.gson.reflect"><CODE>TypeToken</CODE></A></DL>
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<HR>
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<P>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<A NAME="constructor_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Constructor Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#Gson()">Gson</A></B>()</CODE>
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<BR>
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Constructs a Gson object with default configuration.</TD>
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</TR>
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</TABLE>
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<!-- ========== METHOD SUMMARY =========== -->
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<A NAME="method_summary"><!-- --></A>
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<B>Method Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>
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<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
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<TR ALIGN="right" VALIGN="">
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<TD NOWRAP><FONT SIZE="-1">
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<CODE><T> T</CODE></FONT></TD>
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</TR>
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</TABLE>
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</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#fromJson(com.google.gson.JsonElement, java.lang.Class)">fromJson</A></B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> json,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><T> classOfT)</CODE>
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<BR>
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This method deserializes the Json read from the specified parse tree into an object of the
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specified type.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>
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<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
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<TR ALIGN="right" VALIGN="">
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<TD NOWRAP><FONT SIZE="-1">
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<CODE><T> T</CODE></FONT></TD>
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</TR>
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</TABLE>
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</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#fromJson(com.google.gson.JsonElement, java.lang.reflect.Type)">fromJson</A></B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> json,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)</CODE>
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<BR>
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This method deserializes the Json read from the specified parse tree into an object of the
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specified type.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>
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<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
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<TR ALIGN="right" VALIGN="">
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<TD NOWRAP><FONT SIZE="-1">
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<CODE><T> T</CODE></FONT></TD>
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</TR>
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</TABLE>
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</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#fromJson(com.google.gson.stream.JsonReader, java.lang.reflect.Type)">fromJson</A></B>(<A HREF="../../../com/google/gson/stream/JsonReader.html" title="class in com.google.gson.stream">JsonReader</A> reader,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)</CODE>
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<BR>
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Reads the next JSON value from <code>reader</code> and convert it to an object
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of type <code>typeOfT</code>.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>
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<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
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<TR ALIGN="right" VALIGN="">
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<TD NOWRAP><FONT SIZE="-1">
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<CODE><T> T</CODE></FONT></TD>
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</TR>
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</TABLE>
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</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#fromJson(java.io.Reader, java.lang.Class)">fromJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io">Reader</A> json,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><T> classOfT)</CODE>
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<BR>
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This method deserializes the Json read from the specified reader into an object of the
|
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specified class.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>
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<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
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<TR ALIGN="right" VALIGN="">
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<TD NOWRAP><FONT SIZE="-1">
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<CODE><T> T</CODE></FONT></TD>
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</TR>
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</TABLE>
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</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#fromJson(java.io.Reader, java.lang.reflect.Type)">fromJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io">Reader</A> json,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)</CODE>
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<BR>
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This method deserializes the Json read from the specified reader into an object of the
|
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specified type.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>
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<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
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<TR ALIGN="right" VALIGN="">
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<TD NOWRAP><FONT SIZE="-1">
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<CODE><T> T</CODE></FONT></TD>
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</TR>
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</TABLE>
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</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.Class)">fromJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> json,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><T> classOfT)</CODE>
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<BR>
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This method deserializes the specified Json into an object of the specified class.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>
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<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
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<TR ALIGN="right" VALIGN="">
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<TD NOWRAP><FONT SIZE="-1">
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<CODE><T> T</CODE></FONT></TD>
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</TR>
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</TABLE>
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</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.reflect.Type)">fromJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> json,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)</CODE>
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<BR>
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This method deserializes the specified Json into an object of the specified type.</TD>
|
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
|
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(com.google.gson.JsonElement)">toJson</A></B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> jsonElement)</CODE>
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<BR>
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Converts a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s into its equivalent JSON representation.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(com.google.gson.JsonElement, java.lang.Appendable)">toJson</A></B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> jsonElement,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Appendable.html?is-external=true" title="class or interface in java.lang">Appendable</A> writer)</CODE>
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<BR>
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Writes out the equivalent JSON for a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
|
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(com.google.gson.JsonElement, com.google.gson.stream.JsonWriter)">toJson</A></B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> jsonElement,
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<A HREF="../../../com/google/gson/stream/JsonWriter.html" title="class in com.google.gson.stream">JsonWriter</A> writer)</CODE>
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<BR>
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Writes the JSON for <code>jsonElement</code> to <code>writer</code>.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object)">toJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src)</CODE>
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<BR>
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This method serializes the specified object into its equivalent Json representation.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.Appendable)">toJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
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<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Appendable.html?is-external=true" title="class or interface in java.lang">Appendable</A> writer)</CODE>
|
|
|
|
<BR>
|
|
This method serializes the specified object into its equivalent Json representation.</TD>
|
|
</TR>
|
|
<TR BGCOLOR="white" CLASS="TableRowColor">
|
|
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
|
|
<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.reflect.Type)">toJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc)</CODE>
|
|
|
|
<BR>
|
|
This method serializes the specified object, including those of generic types, into its
|
|
equivalent Json representation.</TD>
|
|
</TR>
|
|
<TR BGCOLOR="white" CLASS="TableRowColor">
|
|
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
|
|
<CODE> void</CODE></FONT></TD>
|
|
<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.reflect.Type, java.lang.Appendable)">toJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Appendable.html?is-external=true" title="class or interface in java.lang">Appendable</A> writer)</CODE>
|
|
|
|
<BR>
|
|
This method serializes the specified object, including those of generic types, into its
|
|
equivalent Json representation.</TD>
|
|
</TR>
|
|
<TR BGCOLOR="white" CLASS="TableRowColor">
|
|
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
|
|
<CODE> void</CODE></FONT></TD>
|
|
<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.reflect.Type, com.google.gson.stream.JsonWriter)">toJson</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc,
|
|
<A HREF="../../../com/google/gson/stream/JsonWriter.html" title="class in com.google.gson.stream">JsonWriter</A> writer)</CODE>
|
|
|
|
<BR>
|
|
Writes the JSON representation of <code>src</code> of type <code>typeOfSrc</code> to
|
|
<code>writer</code>.</TD>
|
|
</TR>
|
|
<TR BGCOLOR="white" CLASS="TableRowColor">
|
|
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
|
|
<CODE> <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A></CODE></FONT></TD>
|
|
<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJsonTree(java.lang.Object)">toJsonTree</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src)</CODE>
|
|
|
|
<BR>
|
|
This method serializes the specified object into its equivalent representation as a tree of
|
|
<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s.</TD>
|
|
</TR>
|
|
<TR BGCOLOR="white" CLASS="TableRowColor">
|
|
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
|
|
<CODE> <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A></CODE></FONT></TD>
|
|
<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toJsonTree(java.lang.Object, java.lang.reflect.Type)">toJsonTree</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc)</CODE>
|
|
|
|
<BR>
|
|
This method serializes the specified object, including those of generic types, into its
|
|
equivalent representation as a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s.</TD>
|
|
</TR>
|
|
<TR BGCOLOR="white" CLASS="TableRowColor">
|
|
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
|
|
<CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
|
|
<TD><CODE><B><A HREF="../../../com/google/gson/Gson.html#toString()">toString</A></B>()</CODE>
|
|
|
|
<BR>
|
|
</TD>
|
|
</TR>
|
|
</TABLE>
|
|
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
|
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
|
|
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
|
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<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
|
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</TR>
|
|
<TR BGCOLOR="white" CLASS="TableRowColor">
|
|
<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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</TR>
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</TABLE>
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<P>
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|
|
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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|
|
|
<A NAME="constructor_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
|
|
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
|
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
|
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<B>Constructor Detail</B></FONT></TH>
|
|
</TR>
|
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</TABLE>
|
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|
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<A NAME="Gson()"><!-- --></A><H3>
|
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Gson</H3>
|
|
<PRE>
|
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public <B>Gson</B>()</PRE>
|
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<DL>
|
|
<DD>Constructs a Gson object with default configuration. The default configuration has the
|
|
following settings:
|
|
<ul>
|
|
<li>The JSON generated by <code>toJson</code> methods is in compact representation. This
|
|
means that all the unneeded white-space is removed. You can change this behavior with
|
|
<A HREF="../../../com/google/gson/GsonBuilder.html#setPrettyPrinting()"><CODE>GsonBuilder.setPrettyPrinting()</CODE></A>. </li>
|
|
<li>The generated JSON omits all the fields that are null. Note that nulls in arrays are
|
|
kept as is since an array is an ordered list. Moreover, if a field is not null, but its
|
|
generated JSON is empty, the field is kept. You can configure Gson to serialize null values
|
|
by setting <A HREF="../../../com/google/gson/GsonBuilder.html#serializeNulls()"><CODE>GsonBuilder.serializeNulls()</CODE></A>.</li>
|
|
<li>Gson provides default serialization and deserialization for Enums, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util"><CODE>Map</CODE></A>,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net"><CODE>URL</CODE></A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/net/URI.html?is-external=true" title="class or interface in java.net"><CODE>URI</CODE></A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util"><CODE>Locale</CODE></A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util"><CODE>Date</CODE></A>,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/math/BigDecimal.html?is-external=true" title="class or interface in java.math"><CODE>BigDecimal</CODE></A>, and <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/math/BigInteger.html?is-external=true" title="class or interface in java.math"><CODE>BigInteger</CODE></A> classes. If you would prefer
|
|
to change the default representation, you can do so by registering a type adapter through
|
|
<A HREF="../../../com/google/gson/GsonBuilder.html#registerTypeAdapter(java.lang.reflect.Type, java.lang.Object)"><CODE>GsonBuilder.registerTypeAdapter(Type, Object)</CODE></A>. </li>
|
|
<li>The default Date format is same as <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/text/DateFormat.html?is-external=true#DEFAULT" title="class or interface in java.text"><CODE>DateFormat.DEFAULT</CODE></A>. This format
|
|
ignores the millisecond portion of the date during serialization. You can change
|
|
this by invoking <A HREF="../../../com/google/gson/GsonBuilder.html#setDateFormat(int)"><CODE>GsonBuilder.setDateFormat(int)</CODE></A> or
|
|
<A HREF="../../../com/google/gson/GsonBuilder.html#setDateFormat(java.lang.String)"><CODE>GsonBuilder.setDateFormat(String)</CODE></A>. </li>
|
|
<li>By default, Gson ignores the <A HREF="../../../com/google/gson/annotations/Expose.html" title="annotation in com.google.gson.annotations"><CODE>Expose</CODE></A> annotation.
|
|
You can enable Gson to serialize/deserialize only those fields marked with this annotation
|
|
through <A HREF="../../../com/google/gson/GsonBuilder.html#excludeFieldsWithoutExposeAnnotation()"><CODE>GsonBuilder.excludeFieldsWithoutExposeAnnotation()</CODE></A>. </li>
|
|
<li>By default, Gson ignores the <A HREF="../../../com/google/gson/annotations/Since.html" title="annotation in com.google.gson.annotations"><CODE>Since</CODE></A> annotation. You
|
|
can enable Gson to use this annotation through <A HREF="../../../com/google/gson/GsonBuilder.html#setVersion(double)"><CODE>GsonBuilder.setVersion(double)</CODE></A>.</li>
|
|
<li>The default field naming policy for the output Json is same as in Java. So, a Java class
|
|
field <code>versionNumber</code> will be output as <code>"versionNumber@quot;</code> in
|
|
Json. The same rules are applied for mapping incoming Json to the Java classes. You can
|
|
change this policy through <A HREF="../../../com/google/gson/GsonBuilder.html#setFieldNamingPolicy(com.google.gson.FieldNamingPolicy)"><CODE>GsonBuilder.setFieldNamingPolicy(FieldNamingPolicy)</CODE></A>.</li>
|
|
<li>By default, Gson excludes <code>transient</code> or <code>static</code> fields from
|
|
consideration for serialization and deserialization. You can change this behavior through
|
|
<A HREF="../../../com/google/gson/GsonBuilder.html#excludeFieldsWithModifiers(int...)"><CODE>GsonBuilder.excludeFieldsWithModifiers(int...)</CODE></A>.</li>
|
|
</ul>
|
|
<P>
|
|
</DL>
|
|
|
|
<!-- ============ METHOD DETAIL ========== -->
|
|
|
|
<A NAME="method_detail"><!-- --></A>
|
|
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
|
|
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
|
|
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
|
|
<B>Method Detail</B></FONT></TH>
|
|
</TR>
|
|
</TABLE>
|
|
|
|
<A NAME="toJsonTree(java.lang.Object)"><!-- --></A><H3>
|
|
toJsonTree</H3>
|
|
<PRE>
|
|
public <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> <B>toJsonTree</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src)</PRE>
|
|
<DL>
|
|
<DD>This method serializes the specified object into its equivalent representation as a tree of
|
|
<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s. This method should be used when the specified object is not a generic
|
|
type. This method uses <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang"><CODE>Object.getClass()</CODE></A> to get the type for the specified object, but
|
|
the <code>getClass()</code> loses the generic type information because of the Type Erasure feature
|
|
of Java. Note that this method works fine if the any of the object fields are of generic type,
|
|
just the object itself should not be of a generic type. If the object is of generic type, use
|
|
<A HREF="../../../com/google/gson/Gson.html#toJsonTree(java.lang.Object, java.lang.reflect.Type)"><CODE>toJsonTree(Object, Type)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>src</CODE> - the object for which Json representation is to be created setting for Gson
|
|
<DT><B>Returns:</B><DD>Json representation of <code>src</code>.<DT><B>Since:</B></DT>
|
|
<DD>1.4</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJsonTree(java.lang.Object, java.lang.reflect.Type)"><!-- --></A><H3>
|
|
toJsonTree</H3>
|
|
<PRE>
|
|
public <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> <B>toJsonTree</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc)</PRE>
|
|
<DL>
|
|
<DD>This method serializes the specified object, including those of generic types, into its
|
|
equivalent representation as a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s. This method must be used if the
|
|
specified object is a generic type. For non-generic objects, use <A HREF="../../../com/google/gson/Gson.html#toJsonTree(java.lang.Object)"><CODE>toJsonTree(Object)</CODE></A>
|
|
instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>src</CODE> - the object for which JSON representation is to be created<DD><CODE>typeOfSrc</CODE> - The specific genericized type of src. You can obtain
|
|
this type by using the <A HREF="../../../com/google/gson/reflect/TypeToken.html" title="class in com.google.gson.reflect"><CODE>TypeToken</CODE></A> class. For example,
|
|
to get the type for <code>Collection<Foo></code>, you should use:
|
|
<pre>
|
|
Type typeOfSrc = new TypeToken<Collection<Foo>>(){}.getType();
|
|
</pre>
|
|
<DT><B>Returns:</B><DD>Json representation of <code>src</code><DT><B>Since:</B></DT>
|
|
<DD>1.4</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(java.lang.Object)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>toJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src)</PRE>
|
|
<DL>
|
|
<DD>This method serializes the specified object into its equivalent Json representation.
|
|
This method should be used when the specified object is not a generic type. This method uses
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang"><CODE>Object.getClass()</CODE></A> to get the type for the specified object, but the
|
|
<code>getClass()</code> loses the generic type information because of the Type Erasure feature
|
|
of Java. Note that this method works fine if the any of the object fields are of generic type,
|
|
just the object itself should not be of a generic type. If the object is of generic type, use
|
|
<A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.reflect.Type)"><CODE>toJson(Object, Type)</CODE></A> instead. If you want to write out the object to a
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io"><CODE>Writer</CODE></A>, use <A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.Appendable)"><CODE>toJson(Object, Appendable)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>src</CODE> - the object for which Json representation is to be created setting for Gson
|
|
<DT><B>Returns:</B><DD>Json representation of <code>src</code>.</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(java.lang.Object, java.lang.reflect.Type)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>toJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc)</PRE>
|
|
<DL>
|
|
<DD>This method serializes the specified object, including those of generic types, into its
|
|
equivalent Json representation. This method must be used if the specified object is a generic
|
|
type. For non-generic objects, use <A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object)"><CODE>toJson(Object)</CODE></A> instead. If you want to write out
|
|
the object to a <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Appendable.html?is-external=true" title="class or interface in java.lang"><CODE>Appendable</CODE></A>, use <A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.reflect.Type, java.lang.Appendable)"><CODE>toJson(Object, Type, Appendable)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>src</CODE> - the object for which JSON representation is to be created<DD><CODE>typeOfSrc</CODE> - The specific genericized type of src. You can obtain
|
|
this type by using the <A HREF="../../../com/google/gson/reflect/TypeToken.html" title="class in com.google.gson.reflect"><CODE>TypeToken</CODE></A> class. For example,
|
|
to get the type for <code>Collection<Foo></code>, you should use:
|
|
<pre>
|
|
Type typeOfSrc = new TypeToken<Collection<Foo>>(){}.getType();
|
|
</pre>
|
|
<DT><B>Returns:</B><DD>Json representation of <code>src</code></DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(java.lang.Object, java.lang.Appendable)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public void <B>toJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Appendable.html?is-external=true" title="class or interface in java.lang">Appendable</A> writer)
|
|
throws <A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></PRE>
|
|
<DL>
|
|
<DD>This method serializes the specified object into its equivalent Json representation.
|
|
This method should be used when the specified object is not a generic type. This method uses
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang"><CODE>Object.getClass()</CODE></A> to get the type for the specified object, but the
|
|
<code>getClass()</code> loses the generic type information because of the Type Erasure feature
|
|
of Java. Note that this method works fine if the any of the object fields are of generic type,
|
|
just the object itself should not be of a generic type. If the object is of generic type, use
|
|
<A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.reflect.Type, java.lang.Appendable)"><CODE>toJson(Object, Type, Appendable)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>src</CODE> - the object for which Json representation is to be created setting for Gson<DD><CODE>writer</CODE> - Writer to which the Json representation needs to be written
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem writing to the writer<DT><B>Since:</B></DT>
|
|
<DD>1.2</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(java.lang.Object, java.lang.reflect.Type, java.lang.Appendable)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public void <B>toJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Appendable.html?is-external=true" title="class or interface in java.lang">Appendable</A> writer)
|
|
throws <A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></PRE>
|
|
<DL>
|
|
<DD>This method serializes the specified object, including those of generic types, into its
|
|
equivalent Json representation. This method must be used if the specified object is a generic
|
|
type. For non-generic objects, use <A HREF="../../../com/google/gson/Gson.html#toJson(java.lang.Object, java.lang.Appendable)"><CODE>toJson(Object, Appendable)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>src</CODE> - the object for which JSON representation is to be created<DD><CODE>typeOfSrc</CODE> - The specific genericized type of src. You can obtain
|
|
this type by using the <A HREF="../../../com/google/gson/reflect/TypeToken.html" title="class in com.google.gson.reflect"><CODE>TypeToken</CODE></A> class. For example,
|
|
to get the type for <code>Collection<Foo></code>, you should use:
|
|
<pre>
|
|
Type typeOfSrc = new TypeToken<Collection<Foo>>(){}.getType();
|
|
</pre><DD><CODE>writer</CODE> - Writer to which the Json representation of src needs to be written.
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem writing to the writer<DT><B>Since:</B></DT>
|
|
<DD>1.2</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(java.lang.Object, java.lang.reflect.Type, com.google.gson.stream.JsonWriter)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public void <B>toJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> src,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfSrc,
|
|
<A HREF="../../../com/google/gson/stream/JsonWriter.html" title="class in com.google.gson.stream">JsonWriter</A> writer)
|
|
throws <A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></PRE>
|
|
<DL>
|
|
<DD>Writes the JSON representation of <code>src</code> of type <code>typeOfSrc</code> to
|
|
<code>writer</code>.
|
|
<P>
|
|
<DD><DL>
|
|
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem writing to the writer</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(com.google.gson.JsonElement)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>toJson</B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> jsonElement)</PRE>
|
|
<DL>
|
|
<DD>Converts a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s into its equivalent JSON representation.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>jsonElement</CODE> - root of a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s
|
|
<DT><B>Returns:</B><DD>JSON String representation of the tree<DT><B>Since:</B></DT>
|
|
<DD>1.4</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(com.google.gson.JsonElement, java.lang.Appendable)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public void <B>toJson</B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> jsonElement,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Appendable.html?is-external=true" title="class or interface in java.lang">Appendable</A> writer)
|
|
throws <A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></PRE>
|
|
<DL>
|
|
<DD>Writes out the equivalent JSON for a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>jsonElement</CODE> - root of a tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s<DD><CODE>writer</CODE> - Writer to which the Json representation needs to be written
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem writing to the writer<DT><B>Since:</B></DT>
|
|
<DD>1.4</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toJson(com.google.gson.JsonElement, com.google.gson.stream.JsonWriter)"><!-- --></A><H3>
|
|
toJson</H3>
|
|
<PRE>
|
|
public void <B>toJson</B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> jsonElement,
|
|
<A HREF="../../../com/google/gson/stream/JsonWriter.html" title="class in com.google.gson.stream">JsonWriter</A> writer)
|
|
throws <A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></PRE>
|
|
<DL>
|
|
<DD>Writes the JSON for <code>jsonElement</code> to <code>writer</code>.
|
|
<P>
|
|
<DD><DL>
|
|
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem writing to the writer</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="fromJson(java.lang.String, java.lang.Class)"><!-- --></A><H3>
|
|
fromJson</H3>
|
|
<PRE>
|
|
public <T> T <B>fromJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> json,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><T> classOfT)
|
|
throws <A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></PRE>
|
|
<DL>
|
|
<DD>This method deserializes the specified Json into an object of the specified class. It is not
|
|
suitable to use if the specified class is a generic type since it will not have the generic
|
|
type information because of the Type Erasure feature of Java. Therefore, this method should not
|
|
be used if the desired type is a generic type. Note that this method works fine if the any of
|
|
the fields of the specified object are generics, just the object itself should not be a
|
|
generic type. For the cases when the object is of generic type, invoke
|
|
<A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.reflect.Type)"><CODE>fromJson(String, Type)</CODE></A>. If you have the Json in a <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io"><CODE>Reader</CODE></A> instead of
|
|
a String, use <A HREF="../../../com/google/gson/Gson.html#fromJson(java.io.Reader, java.lang.Class)"><CODE>fromJson(Reader, Class)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Type Parameters:</B><DD><CODE>T</CODE> - the type of the desired object<DT><B>Parameters:</B><DD><CODE>json</CODE> - the string from which the object is to be deserialized<DD><CODE>classOfT</CODE> - the class of T
|
|
<DT><B>Returns:</B><DD>an object of type T from the string
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></CODE> - if json is not a valid representation for an object of type
|
|
classOfT</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="fromJson(java.lang.String, java.lang.reflect.Type)"><!-- --></A><H3>
|
|
fromJson</H3>
|
|
<PRE>
|
|
public <T> T <B>fromJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> json,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)
|
|
throws <A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></PRE>
|
|
<DL>
|
|
<DD>This method deserializes the specified Json into an object of the specified type. This method
|
|
is useful if the specified object is a generic type. For non-generic objects, use
|
|
<A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.Class)"><CODE>fromJson(String, Class)</CODE></A> instead. If you have the Json in a <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io"><CODE>Reader</CODE></A> instead of
|
|
a String, use <A HREF="../../../com/google/gson/Gson.html#fromJson(java.io.Reader, java.lang.reflect.Type)"><CODE>fromJson(Reader, Type)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Type Parameters:</B><DD><CODE>T</CODE> - the type of the desired object<DT><B>Parameters:</B><DD><CODE>json</CODE> - the string from which the object is to be deserialized<DD><CODE>typeOfT</CODE> - The specific genericized type of src. You can obtain this type by using the
|
|
<A HREF="../../../com/google/gson/reflect/TypeToken.html" title="class in com.google.gson.reflect"><CODE>TypeToken</CODE></A> class. For example, to get the type for
|
|
<code>Collection<Foo></code>, you should use:
|
|
<pre>
|
|
Type typeOfT = new TypeToken<Collection<Foo>>(){}.getType();
|
|
</pre>
|
|
<DT><B>Returns:</B><DD>an object of type T from the string
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonParseException.html" title="class in com.google.gson">JsonParseException</A></CODE> - if json is not a valid representation for an object of type typeOfT
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></CODE> - if json is not a valid representation for an object of type</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="fromJson(java.io.Reader, java.lang.Class)"><!-- --></A><H3>
|
|
fromJson</H3>
|
|
<PRE>
|
|
public <T> T <B>fromJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io">Reader</A> json,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><T> classOfT)
|
|
throws <A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A>,
|
|
<A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></PRE>
|
|
<DL>
|
|
<DD>This method deserializes the Json read from the specified reader into an object of the
|
|
specified class. It is not suitable to use if the specified class is a generic type since it
|
|
will not have the generic type information because of the Type Erasure feature of Java.
|
|
Therefore, this method should not be used if the desired type is a generic type. Note that
|
|
this method works fine if the any of the fields of the specified object are generics, just the
|
|
object itself should not be a generic type. For the cases when the object is of generic type,
|
|
invoke <A HREF="../../../com/google/gson/Gson.html#fromJson(java.io.Reader, java.lang.reflect.Type)"><CODE>fromJson(Reader, Type)</CODE></A>. If you have the Json in a String form instead of a
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io"><CODE>Reader</CODE></A>, use <A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.Class)"><CODE>fromJson(String, Class)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Type Parameters:</B><DD><CODE>T</CODE> - the type of the desired object<DT><B>Parameters:</B><DD><CODE>json</CODE> - the reader producing the Json from which the object is to be deserialized.<DD><CODE>classOfT</CODE> - the class of T
|
|
<DT><B>Returns:</B><DD>an object of type T from the string
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem reading from the Reader
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></CODE> - if json is not a valid representation for an object of type<DT><B>Since:</B></DT>
|
|
<DD>1.2</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="fromJson(java.io.Reader, java.lang.reflect.Type)"><!-- --></A><H3>
|
|
fromJson</H3>
|
|
<PRE>
|
|
public <T> T <B>fromJson</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io">Reader</A> json,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)
|
|
throws <A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A>,
|
|
<A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></PRE>
|
|
<DL>
|
|
<DD>This method deserializes the Json read from the specified reader into an object of the
|
|
specified type. This method is useful if the specified object is a generic type. For
|
|
non-generic objects, use <A HREF="../../../com/google/gson/Gson.html#fromJson(java.io.Reader, java.lang.Class)"><CODE>fromJson(Reader, Class)</CODE></A> instead. If you have the Json in a
|
|
String form instead of a <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io"><CODE>Reader</CODE></A>, use <A HREF="../../../com/google/gson/Gson.html#fromJson(java.lang.String, java.lang.reflect.Type)"><CODE>fromJson(String, Type)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Type Parameters:</B><DD><CODE>T</CODE> - the type of the desired object<DT><B>Parameters:</B><DD><CODE>json</CODE> - the reader producing Json from which the object is to be deserialized<DD><CODE>typeOfT</CODE> - The specific genericized type of src. You can obtain this type by using the
|
|
<A HREF="../../../com/google/gson/reflect/TypeToken.html" title="class in com.google.gson.reflect"><CODE>TypeToken</CODE></A> class. For example, to get the type for
|
|
<code>Collection<Foo></code>, you should use:
|
|
<pre>
|
|
Type typeOfT = new TypeToken<Collection<Foo>>(){}.getType();
|
|
</pre>
|
|
<DT><B>Returns:</B><DD>an object of type T from the json
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem reading from the Reader
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></CODE> - if json is not a valid representation for an object of type<DT><B>Since:</B></DT>
|
|
<DD>1.2</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="fromJson(com.google.gson.stream.JsonReader, java.lang.reflect.Type)"><!-- --></A><H3>
|
|
fromJson</H3>
|
|
<PRE>
|
|
public <T> T <B>fromJson</B>(<A HREF="../../../com/google/gson/stream/JsonReader.html" title="class in com.google.gson.stream">JsonReader</A> reader,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)
|
|
throws <A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A>,
|
|
<A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></PRE>
|
|
<DL>
|
|
<DD>Reads the next JSON value from <code>reader</code> and convert it to an object
|
|
of type <code>typeOfT</code>.
|
|
Since Type is not parameterized by T, this method is type unsafe and should be used carefully
|
|
<P>
|
|
<DD><DL>
|
|
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonIOException.html" title="class in com.google.gson">JsonIOException</A></CODE> - if there was a problem writing to the Reader
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></CODE> - if json is not a valid representation for an object of type</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="fromJson(com.google.gson.JsonElement, java.lang.Class)"><!-- --></A><H3>
|
|
fromJson</H3>
|
|
<PRE>
|
|
public <T> T <B>fromJson</B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> json,
|
|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><T> classOfT)
|
|
throws <A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></PRE>
|
|
<DL>
|
|
<DD>This method deserializes the Json read from the specified parse tree into an object of the
|
|
specified type. It is not suitable to use if the specified class is a generic type since it
|
|
will not have the generic type information because of the Type Erasure feature of Java.
|
|
Therefore, this method should not be used if the desired type is a generic type. Note that
|
|
this method works fine if the any of the fields of the specified object are generics, just the
|
|
object itself should not be a generic type. For the cases when the object is of generic type,
|
|
invoke <A HREF="../../../com/google/gson/Gson.html#fromJson(com.google.gson.JsonElement, java.lang.reflect.Type)"><CODE>fromJson(JsonElement, Type)</CODE></A>.
|
|
<P>
|
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<DD><DL>
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<DT><B>Type Parameters:</B><DD><CODE>T</CODE> - the type of the desired object<DT><B>Parameters:</B><DD><CODE>json</CODE> - the root of the parse tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s from which the object is to
|
|
be deserialized<DD><CODE>classOfT</CODE> - The class of T
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<DT><B>Returns:</B><DD>an object of type T from the json
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|
<DT><B>Throws:</B>
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|
<DD><CODE><A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></CODE> - if json is not a valid representation for an object of type typeOfT<DT><B>Since:</B></DT>
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<DD>1.3</DD>
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</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="fromJson(com.google.gson.JsonElement, java.lang.reflect.Type)"><!-- --></A><H3>
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fromJson</H3>
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<PRE>
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public <T> T <B>fromJson</B>(<A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson">JsonElement</A> json,
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|
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</A> typeOfT)
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throws <A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></PRE>
|
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<DL>
|
|
<DD>This method deserializes the Json read from the specified parse tree into an object of the
|
|
specified type. This method is useful if the specified object is a generic type. For
|
|
non-generic objects, use <A HREF="../../../com/google/gson/Gson.html#fromJson(com.google.gson.JsonElement, java.lang.Class)"><CODE>fromJson(JsonElement, Class)</CODE></A> instead.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Type Parameters:</B><DD><CODE>T</CODE> - the type of the desired object<DT><B>Parameters:</B><DD><CODE>json</CODE> - the root of the parse tree of <A HREF="../../../com/google/gson/JsonElement.html" title="class in com.google.gson"><CODE>JsonElement</CODE></A>s from which the object is to
|
|
be deserialized<DD><CODE>typeOfT</CODE> - The specific genericized type of src. You can obtain this type by using the
|
|
<A HREF="../../../com/google/gson/reflect/TypeToken.html" title="class in com.google.gson.reflect"><CODE>TypeToken</CODE></A> class. For example, to get the type for
|
|
<code>Collection<Foo></code>, you should use:
|
|
<pre>
|
|
Type typeOfT = new TypeToken<Collection<Foo>>(){}.getType();
|
|
</pre>
|
|
<DT><B>Returns:</B><DD>an object of type T from the json
|
|
<DT><B>Throws:</B>
|
|
<DD><CODE><A HREF="../../../com/google/gson/JsonSyntaxException.html" title="class in com.google.gson">JsonSyntaxException</A></CODE> - if json is not a valid representation for an object of type typeOfT<DT><B>Since:</B></DT>
|
|
<DD>1.3</DD>
|
|
</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="toString()"><!-- --></A><H3>
|
|
toString</H3>
|
|
<PRE>
|
|
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
|
|
<DL>
|
|
<DD><DL>
|
|
<DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A></CODE> in class <CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></DL>
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</DD>
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<DD><DL>
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