Adding new convenience method to JsonObject for adding Booleans and Characters.

gson/src/main/java/com/google/gson/JsonObject.java

@@ -72,7 +72,7 @@ public final class JsonObject extends JsonElement {
    * @param value the string value associated with the member.
    */
   public void addProperty(String property, String value) {
-    members.put(property, new JsonPrimitive(value));
+    add(property, createJsonElement(value));
   }
   
   /**
@@ -83,7 +83,43 @@ public final class JsonObject extends JsonElement {
    * @param value the number value associated with the member.
    */
   public void addProperty(String property, Number value) {
-    members.put(property, new JsonPrimitive(value));
+    add(property, createJsonElement(value));
+  }
+  
+  /**
+   * Convenience method to add a boolean member. The specified value is converted to a 
+   * JsonPrimitive of Boolean. 
+   *  
+   * @param property name of the member.
+   * @param value the number value associated with the member.
+   */
+  public void addProperty(String property, Boolean value) {
+    add(property, createJsonElement(value));
+  }
+  
+  /**
+   * Convenience method to add a char member. The specified value is converted to a 
+   * JsonPrimitive of Character. 
+   *  
+   * @param property name of the member.
+   * @param value the number value associated with the member.
+   */
+  public void addProperty(String property, Character value) {
+    add(property, createJsonElement(value));
+  }
+
+  /**
+   * Creates the proper {@link JsonElement} object from the given {@code value} object.
+   *
+   * @param value the object to generate the {@link JsonElement} for
+   * @return a {@link JsonPrimitive} if the {@code value} is not null, otherwise a {@link JsonNull}
+   */
+  private JsonElement createJsonElement(Object value) {
+    if (value == null) {
+      return JsonNull.createJsonNull();
+    } else {
+      return new JsonPrimitive(value);
+    }
   }
 
   /**

gson/src/main/java/com/google/gson/JsonPrimitive.java

@@ -71,16 +71,6 @@ public final class JsonPrimitive extends JsonElement {
     this.value = String.valueOf(c);
   }
 
-  /**
-   * Create a primitive containing a character. The character is turned into a one character String
-   * since Json only supports String.
-   *
-   * @param c the value to create the primitive with.
-   */
-  public JsonPrimitive(char c) {
-    this.value = String.valueOf(c);
-  }
-
   /**
    * Create a primitive using the specified Object. It must be an instance of {@link Number}, a
    * Java primitive type, or a String.
@@ -95,7 +85,7 @@ public final class JsonPrimitive extends JsonElement {
     if (primitive instanceof Character) {
       // convert characters to strings since in JSON, characters are represented as a single
       // character string
-      char c = ((Character)primitive).charValue();
+      char c = ((Character) primitive).charValue();
       this.value = String.valueOf(c);
     } else {
       Preconditions.checkArgument(primitive instanceof Number

gson/src/test/java/com/google/gson/JsonObjectTest.java

@@ -51,4 +51,45 @@ public class JsonObjectTest extends TestCase {
     assertNotNull(jsonElement);
     assertTrue(jsonElement.isJsonNull());
   }
+  
+  public void testAddingBooleanProperties() throws Exception {
+    String propertyName = "property";
+    JsonObject jsonObj = new JsonObject();
+    jsonObj.addProperty(propertyName, true);
+    
+    assertTrue(jsonObj.has(propertyName));
+    
+    JsonElement jsonElement = jsonObj.get(propertyName);
+    assertNotNull(jsonElement);
+    assertTrue(jsonElement.getAsBoolean());
+  }
+  
+  public void testAddingStringProperties() throws Exception {
+    String propertyName = "property";
+    String value = "blah";
+
+    JsonObject jsonObj = new JsonObject();
+    jsonObj.addProperty(propertyName, value);
+    
+    assertTrue(jsonObj.has(propertyName));
+    
+    JsonElement jsonElement = jsonObj.get(propertyName);
+    assertNotNull(jsonElement);
+    assertEquals(value, jsonElement.getAsString());
+  }
+  
+  public void testAddingCharacterProperties() throws Exception {
+    String propertyName = "property";
+    char value = 'a';
+
+    JsonObject jsonObj = new JsonObject();
+    jsonObj.addProperty(propertyName, value);
+    
+    assertTrue(jsonObj.has(propertyName));
+    
+    JsonElement jsonElement = jsonObj.get(propertyName);
+    assertNotNull(jsonElement);
+    assertEquals(String.valueOf(value), jsonElement.getAsString());
+    assertEquals(value, jsonElement.getAsCharacter());
+  }
 }