blob: 18e06ffb8d46f15b0ea11b625338523a08fbbb55 [file] [log] [blame]
/*
* Copyright (C) 2009 Google Inc.
*
* 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;
/**
* Thrown when a computer function returns null. This subclass exists so
* that our ReferenceCache adapter can differentiate null output from null
* keys, but we don't want to make this public otherwise.
*
* @author Bob Lee
*/
class NullOutputException extends NullPointerException {
public NullOutputException(String s) {
super(s);
}
private static final long serialVersionUID = 0;
}