Fixed Eclipse warnings

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

@@ -500,6 +500,7 @@ public final class Gson {
    * {@code writer}.
    * @throws JsonIOException if there was a problem writing to the writer
    */
+  @SuppressWarnings("unchecked")
   public void toJson(Object src, Type typeOfSrc, JsonWriter writer) throws JsonIOException {
     TypeAdapter<?> adapter = miniGson.getAdapter(TypeToken.get(typeOfSrc));
     boolean oldLenient = writer.isLenient();

gson/src/main/java/com/google/gson/internal/bind/ArrayTypeAdapter.java

@@ -43,7 +43,7 @@ public final class ArrayTypeAdapter<E> extends TypeAdapter<Object> {
 
       Type componentType = $Gson$Types.getArrayComponentType(type);
       TypeAdapter<?> componentTypeAdapter = context.getAdapter(TypeToken.get(componentType));
-      @SuppressWarnings("unchecked") // create() doesn't define a type parameter
+      // create() doesn't define a type parameter
       TypeAdapter<T> result = new ArrayTypeAdapter(
           context, componentTypeAdapter, $Gson$Types.getRawType(componentType));
       return result;

gson/src/main/java/com/google/gson/internal/bind/JsonElementReader.java

@@ -81,6 +81,7 @@ public final class JsonElementReader extends JsonReader {
     return token != JsonToken.END_OBJECT && token != JsonToken.END_ARRAY;
   }
 
+  @SuppressWarnings("unchecked")
   @Override public JsonToken peek() throws IOException {
     if (stack.isEmpty()) {
       return JsonToken.END_DOCUMENT;
@@ -138,6 +139,7 @@ public final class JsonElementReader extends JsonReader {
     }
   }
 
+  @SuppressWarnings("unchecked")
   @Override public String nextName() throws IOException {
     expect(JsonToken.NAME);
     Iterator<?> i = (Iterator) peekStack();

gson/src/test/java/com/google/gson/functional/VersioningTest.java

@@ -156,6 +156,7 @@ public class VersioningTest extends TestCase {
 
   @Since(1.2)
   private static class Version1_2 extends Version1_1 {
+    @SuppressWarnings("unused")
     int d = D;
   }