70 lines
1.7 KiB
Java
70 lines
1.7 KiB
Java
/*
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* Copyright (C) 2008 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson;
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/**
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* A class representing a JSON {@code null} value.
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*
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* @author Inderjeet Singh
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* @author Joel Leitch
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* @since 1.2
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*/
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public final class JsonNull extends JsonElement {
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/**
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* Singleton for {@code JsonNull}.
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*
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* @since 1.8
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*/
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public static final JsonNull INSTANCE = new JsonNull();
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/**
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* Creates a new {@code JsonNull} object.
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*
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* @deprecated Deprecated since Gson version 1.8, use {@link #INSTANCE} instead.
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*/
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@Deprecated
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public JsonNull() {
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// Do nothing
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}
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/**
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* Returns the same instance since it is an immutable value.
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*
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* @since 2.8.2
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*/
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@Override
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public JsonNull deepCopy() {
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return INSTANCE;
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}
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/**
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* All instances of {@code JsonNull} have the same hash code since they are indistinguishable.
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*/
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@Override
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public int hashCode() {
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return JsonNull.class.hashCode();
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}
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/**
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* All instances of {@code JsonNull} are considered equal.
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*/
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@Override
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public boolean equals(Object other) {
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return other instanceof JsonNull;
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}
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}
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