renamed JsonArray.contains() to has() to be consistent with JsonObjec…

…t.has()

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

@@ -87,6 +87,7 @@ public void set(int index, JsonElement element) {
    * If the array does not contain the element, it is unchanged.
    * @param element element to be removed from this array, if present
    * @return true if this array contained the specified element, false otherwise
+   * @since 2.3
    */
   public boolean remove(JsonElement element) {
     return elements.remove(element);
@@ -99,6 +100,7 @@ public boolean remove(JsonElement element) {
    * @param index index the index of the element to be removed
    * @return the element previously at the specified position
    * @throws IndexOutOfBoundsException if the specified index is outside the array bounds
+   * @since 2.3
    */
   public JsonElement remove(int index) {
     return elements.remove(index);
@@ -108,8 +110,9 @@ public JsonElement remove(int index) {
    * Returns true if this array contains the specified element.
    * @return true if this array contains the specified element.
    * @param element whose presence in this array is to be tested
+   * @since 2.3
    */
-  public boolean contains(JsonElement element) {
+  public boolean has(JsonElement element) {
     return elements.contains(element);
   }
 

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

@@ -60,12 +60,12 @@ public void testRemove() {
     JsonPrimitive a = new JsonPrimitive("a");
     array.add(a);
     assertTrue(array.remove(a));
-    assertFalse(array.contains(a));
+    assertFalse(array.has(a));
     array.add(a);
     array.add(new JsonPrimitive("b"));
     assertEquals("b", array.remove(1).getAsString());
     assertEquals(1, array.size());
-    assertTrue(array.contains(a));
+    assertTrue(array.has(a));
   }
 
   public void testSet() {