guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/EmptyImmutableSet.java

/*
 * Copyright (C) 2009 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect;

import java.util.Collections;

/**
 * GWT emulation of {@link EmptyImmutableSet}.
 *
 * @author Hayward Chan
 */
final class EmptyImmutableSet extends ForwardingImmutableSet<Object> {
  private EmptyImmutableSet() {
    super(Collections.emptySet());
  }

  static final EmptyImmutableSet INSTANCE = new EmptyImmutableSet();
}