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ÖµÀàÐÍÊÇԭʼÊý¾ÝÀàÐÍ °üÀ¨ int,byte,char short long,boolean,float,double
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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
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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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import
java.util.Random;
 
/**
 
*

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*

3.
Ñ¡ÔñÅÅÐò£¨Ö±½ÓÑ¡ÔñÅÅÐò¡¢¶ÑÅÅÐò£©£»
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/**
   * ±£ÁôÁ½Î»Ð¡Êý
   * @param d
   * @return
   */
  private static double remainTwoNumbers(double d){
    java.math.BigDecimal   f1   =   new   java.math.BigDecimal(d);//СÊýµãºó±£Áô2Î ......

javaÈÕÆÚת»»

/**
  * ´¦Àíʱ¼äÒì³£ Date to String
  * Èç¹ûת»»³öÏÖÒì³£»á¸øÄ¬ÈÏÖµ00:00
  * @param time
  * @param sdf
  * @return
  */
 public static  String handleDateParseException(Object time){
  String tempTime = "00:00";
  try{
   ......

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1.JAVAÁ¬½ÓACCESSÊý¾Ý¿â
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:Driver={MicroSoft Access Driver (*.mdb)};DBQ="+application.getRealPath("/Data/ReportDemo.mdb");
Connection conn = DriverManager.getConnection(url,"","");
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