Article View: cn.bbs.comp.lang.java
Article #18939��ѧ����Object���equlas����
From: bluestar
Date: Wed, 14 Jan 2004 07:49
Date: Wed, 14 Jan 2004 07:49
36 lines
2272 bytes
2272 bytes
����˵"��Ȼÿ����жϳ���Object��equlas����,�������Object���е�ԭʼ������
���ݲ���ȥ���κε��ж�,ֻ�Ƿ���false����,����������Ƶ�ÿ����,�����Ҫʹ�õ�
equals�������ʱ,�����Ҫ���и�����".
�������µ�����С����(δ��equals���и���)
1)
public class StringEquals1
{
public static void main(String argv[])
{
String str1 = new String("Hello");
String str2 = new String("Hello");
System.out.println(str1.equals(str2));
}
}
//����ʾtrue
2)
//���һ��MyObject��,������һ��int���Խ�data
public class Prog
{
public static void main(String argv[])
{
MyObject obj1 = new MyObject(1);
MyObject obj2 = new MyObject(2);
System.out.println(obj1.equals(obj2));
}
}
//��ʾfalse
Ϊʲôͬ��δ��equals����,��һ���ܵõ���ȷ�Ľ��,��ڶ���ȴ����?��ʲôʱ��
����Ҫ��equals���и���?
--
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[m[1;31m�� ��Դ:����ˮ˼Դ bbs.sjtu.edu.cn��[FROM: 220.113.170.59][m
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X-Google-Language: Chinese,GB X-Google-Thread: f6cb0,3d8bab135fb456a1,start X-Google-Attributes: gidf6cb0,public X-Google-ArrivalTime: 2004-01-13 23:49:19 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!newshosting.com!nx02.iad01.newshosting.com!feed2.newsreader.com!newsreader.com!maily.cic.tsinghua.edu.cn!news.ccie.net.cn!SJTU From: xingchen.bbs@bbs.sjtu.edu.cn (bluestar) Newsgroups: cn.bbs.comp.lang.java Subject: ��ѧ����Object���equlas���� Date: 14 Jan 2004 07:49:01 GMT Organization: ��ˮ˼Դ Message-ID: <4AFkBR$9iV@bbs.sjtu.edu.cn> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit X-Filename: Java/M.1074065451.A