🚀 go-pugleaf

�� �� nue.bbs@bbs.sjtu.edu.cn (NUE) �Ĵ������ᵽ: ��
: ��  ��: Re: ���ڴ�ֵ���Ǵ����õĽ�һ������
: ����վ: ��ˮ˼Դ (Thu Jul 29 11:04:17 2004)
: ת��վ: NanKai!news2.happynet.org!netnews.sdu.edu.cn!SJTU
: 
: As much as is reasonably practical, the hashCode method defined by class 
: Object does return distinct integers for distinct objects. (This is 
: typically implemented by converting the internal address of the object into 
  ~~~~~~~~typically != always.

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public class test{
    public static void main( String[] args ){
        String a = new String("Hello");
        String b = new String("Hello");
        System.out.println( a == b );
        System.out.println( a.hashCode() );
        System.out.println( b.hashCode() );
    }
}

��Ϊa==b��false,����a��b������ͬһ�����������,
����a��b��hashCode()����ͬ��,������a��b��
��ַӦ���Dz�ͬ��.

: an integer, but this implementation technique is not required by the JavaTM 
: programming language.) 
: 
:  �� �� xeon.bbs@bbs.nankai.edu.cn (98CS~ ��è~������
: ������) �Ĵ������ᵽ: �� : ��������ڴ��߼���ַ������������object��hashCode.
: : ��Object��Ϊ��,toString()����ô�����:
: :     public String toString()
: :     {
: :         return getClass().getName() + "@" + Integer.toHexString(hashCode());
: :     }
: : �ٷ��ĵ�����hashCode()���������:
: : 1.Whenever it is invoked on the same object more than once during an execu
: : tion of a Java application, the hashCode method must consistently return
: :  the same integer, provided no information used in equals comparisons on
: : .................������ʡ�ԣ�
: --
: �� ��Դ:����ˮ˼Դ bbs.sjtu.edu.cn��[FROM: 219.206.224.14]


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