/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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.alibaba.toolkit.util;
/**
* 和一般对象有关的小工具.
*
* @author Michael Zhou
* @version $Id: ObjectUtil.java,v 1.1 2003/07/03 07:26:15 baobao Exp $
*/
public class ObjectUtil {
/**
* 比较两个对象是否相等.
*
* @param o1 对象1
* @param o2 对象2
* @return 如果相等, 则返回<code>true</code>
*/
public static boolean equals(Object o1, Object o2) {
return o1 == null ? o2 == null : o1.equals(o2);
}
/**
* 取得对象的hash值, 如果对象为<code>null</code>, 则返回<code>0</code>
*
* @param o 对象
* @return hash值
*/
public static int hashCode(Object o) {
return o == null ? 0 : o.hashCode();
}
}