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ÖµÀàÐÍÊÇԭʼÊý¾ÝÀàÐÍ °üÀ¨ int,byte,char short long,boolean,float,double
ÒýÓÃÀàÐ;ÍÊÇÒ»°ãµÄclassÀà µ±È»Ò²°üÀ¨Ô­Ê¼Êý¾ÝµÄ·â×°ÀàÐÍ ±ÈÈçintµÄ
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Àý×Ó 1 public  void show1(int str)
    {
       Str=4;
    }
    public static void main(String[] args) {
int k=1;
System.out.println(id);        
 s.show1(str);
       System.out.println(id);
}
Êä³ö½á¹ûΪ    1
1
Öµ´«µÝ±íÏÖΪ ¶Ô¶¨ÒåÊý¾ÝµÄÒ»·Ý¿½±´ ²»Ó°ÏìԭʼÊý¾ÝµÄÖµ
 
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Àý×Ó 2 public  void show1(List list)
    {
       List.add(“dddddd”);
    }
    public static void main(String[] args) {
List list=new ArrayList()
System.out.println(list.size);        
 s.show1(list);
       System.out.println(list.size);
}
Êä³ö½á¹ûΪ    0
1
ÒýÓô«µÝ±íÏÖΪ ½«ÒýÓöÔÏóµÄÄÚ´æµØÖ·´«µÝ¸øÁË show1·½·¨
²Ù×÷ʱ show1·½·¨»á¸ù¾ÝµØÖ·È¥¸Ä±äÒýÓõÄÖµ£¬Êµ¼ÊÉϾÍÊÇÐÞ¸Ä
ÁËԭʼµÄÖµ
 
 
 
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    Àý×Ó 3 public  void show1(String str)
    {
       str=new String("dddddddddddddd");
    }
    public static void main(String[] args) {
String str=new String ("liaomin");     System.out.println(str);
       s.show1(str);
       System.out.println(str);
}
 
Êä³ö½á¹ûΪ liaomin
           liaomin
 
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