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public native String intern();
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public class InternTest{
public static void main(String args[]){
//ÓÃÒ»¸ö×Ö·ûÊý×é³õʼ»¯a,ÊDZÜÃâ³ØÖк¬ÓÐֵΪ"abcd"µÄ¶ÔÏó
String a=new String(new char[]{'a','b','c','d'});
String b=a.intern();
(1)
if(a==b){
System.out.println("b¼ÓÈëÁË×Ö·û´®³ØÖÐ,ûÓÐн¨¶ÔÏó");
}else{
System.out.println("bû¼ÓÈë×Ö·û´®³ØÖÐ,н¨Á˶ÔÏó");
}
}
}
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String a=new String(new char[]{'a','b','c','d'});
¸ÃÓï¾ä»áн¨Ò»¸ö×Ö·û´®¶ÔÏó,µ«¸Ã¶ÔÏó²¢²»»á·ÅÈë×Ö·û´®³ØÖУ¬¶øÊÇ·ÅÔÚ¶ÑÖÐ
ͨ¹ýa.intern()Óï¾ä,JVM½«»áÔÚ×Ö·û´®³ØÖÐн¨Ò»¸öֵΪ"abcd"µÄ¶ÔÏó,²¢°ÑÆäÒýÓ÷µ»Ø¸øb,Òò´Ë²ÅÓÐÁËÉÏÃæµÄÊä³ö
Èç¹ûÔÚ´úÂëÖÐ(1)´¦¼ÓÈëÓï¾ä:String c="abcd";
ÄÇôSystem.out.println(c==b);»á·µ»Øtrue
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