Áù¡¢javaµÄÃæÏò¶ÔÏó³ÌÐòÉè¼Æ(Ïê½âequals·½·¨)
Áù¡¢javaµÄÃæÏò¶ÔÏó³ÌÐòÉè¼Æ(Ïê½âequals·½·¨)
/**
* Ïê½âequals·½·¨.
*/
class Equals
{
private int i;
public void setI(int i)
{
this.i = i;
}
public Equals()
{
i = 1;
}
public Equals(int i)
{
this.i = i;
}
}
class ChangeEquals
{
private int i;
public void setI(int i)
{
this.i = i;
}
public ChangeEquals()
{
i = 1;
}
public ChangeEquals(int i)
{
this.i = i;
}
//¸²¸Ç¸¸ÀàµÄequals·½·¨,±È½ÏÁ½¸ö¶ÔÏóµÄ³ÉÔ±±äÁ¿iµÄÖµ
//Èç¹ûÏàµÈ·µ»Øtrue,²»µÈ·µ»Øfalse.
public boolean equals(Object obj)
{
ChangeEquals ce = null;;
if(obj instanceof ChangeEquals)
{
ce = (ChangeEquals)obj;
if(this.i == ce.i)
return true;
else
return false;
}
return false;
}
}
public class EqualsTest {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
/*µ÷ÓÃÎÒÃÇ´´½¨µÄÀàµÄĬÈÏequals·½·¨*/
System.out.println("µ÷ÓÃÎÒÃÇ´´½¨µÄÀàµÄĬÈÏequals·½·¨");
Equals e1 = new Equals();//²ÉÓÃĬÈϹ¹Ôì»ú
Equals e2 = new Equals();
System.out.println(e2.equals(e1));//false;
Equals e3 = new Equals(20);//²ÉÓôø²ÎÊýµÄ¹¹Ôì»ú
Equals e4 = new Equals(20);
System.out.println(e3.equals(e4));//false
//ͨ¹ýÒÔÉÏʵÀýÖ¤Ã÷,EqualsÀàµÄ³ÉÔ±±äÁ¿i²¢²»ÊÇequals·½·¨ÅжϵÄÒÀ¾Ý.ÔÒòÈçÏÂ:
/*
ÎÒÃÇÏÈÀ´¿´¿´java.lang.ObjectÕâ¸öÀàÖеÄequals·½·¨.
public boolean equals(Object obj)
{
return (this == obj);
}//~~~³ö×ÔjavaµÄlang°ü
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String t=new String();
public void readByLinefromConsoleAndPrint(){
System.out.println("==´Ó¿ØÖÆÌ¨»ñµÃÊäÈë==");
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* ÃæÏò¶ÔÏóÖ®Ò»
* ÀàÓë¶ÔÏó
*/
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* ¶ÔÏóµÄʵÀý»¯¹ý³Ì:
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