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1.»ù±¾Êý¾ÝÀàÐ͵ÄÖµ´«µÝ:
public static void main(String []args)
 {
  int i=10,j=5;
  tValue(i,j);
  System.out.println("i:"+i+"j:"+j);//´òÓ¡½á¹û:i=10,j=5
 }
 public static void tValue(int x,int y)
 {
  x+=y;
  y=x;
 }
×Ü½á£ºÉæ¼°µ½»ù±¾Êý¾ÝÀàÐ͵Ĵ«µÝʱ£¬ÐβνÓÊܵÄÊÇʵ²ÎµÄÖµ¸±±¾¡£ËùÒÔ²»Äܸıäʵ²ÎµÄÖµ
2.¸´ºÏÀàÐ͵ÄÒýÓô«µÝ
void method1() {
¡¡¡¡2 StringBuffer x = new StringBuffer("Hello");
¡¡¡¡3 change1(x);
¡¡¡¡4 System.out.println(x);
¡¡¡¡5 }
¡¡¡¡6
¡¡¡¡7 void method2() {
¡¡¡¡8 StringBuffer x = new StringBuffer("Hello");
¡¡¡¡9 change2(x);
¡¡¡¡10 System.out.println(x);
¡¡¡¡11 }
¡¡¡¡12
¡¡¡¡13 void change1(StringBuffer sb) {
¡¡¡¡14 sb.append(" world!");
¡¡¡¡15 }
¡¡¡¡16
¡¡¡¡17 void change2(StringBuffer sb) {
¡¡¡¡18 sb = new StringBuffer("hi");
¡¡¡¡19 sb.append(" world!");
¡¡¡¡20 }
Õë¶ÔÒÔÉÏ´úÂ룬×ܽá2Ìõ£º1.¶ÔÓÚÀàµÄʵÀýËü´«µÝµÄÊÇÀàµÄÒýÓá£ÐèҪעÒâµÄÊÇ£¬ÕâÌõ¹æÔòÖ»ÊÊÓÃÓÚ²ÎÊý´«µÝ
2.¶ÔÓÚº¯Êýµ÷Óã¬×îÖÕЧ¹ûÊÇʲôÍêÈ«¿´º¯ÊýÄÚ²¿µÄʵÏÖ¡£Èç18ÐдúÂë
Èý¡£¸´ºÏÀàÐ͵ÄÖÐStringµÄÌØÊâÒýÓô«µÝ
public  class Example{
String str=new String("good");
char [] ch=;
public static void main(String args[]){
Example ex=new Example();
ex.change(ex.str,ex.ch);
System.out.print(ex.str+"and");
System.out.print(ex.ch);
}
public void change(String str2,char ch[]){
str="testok";
ch[0]='g';
System.out.print(str);
}
}strµÄ´«µÝÓëÖµ´«µÝÏàËÆ


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