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       Ò»¸öJava½Ó¿Ú(Interface)ÊÇһЩ·½·¨ÌØÕ÷µÄ¼¯ºÏ£¬ÕâЩ·½·¨ÌØÕ÷µ±È»À´×ÔÓÚ¾ßÌåµÄ·½·¨£¬µ«ÊÇËüÃÇÒ»°ã¶¼À´×ÔÓÚϵͳÖв»¶Ï³öÏֵķ½·¨¡£Ò»¸ö½Ó¿ÚÖ»Óз½·¨µÄÌØÕ÷£¬¶øÃ»Óз½·¨µÄʵÏÖ£¬Òò´ËÕâЩ·½·¨ÔÚ²»Í¬µÄµØ·½±»ÊµÏÖʱ£¬¿ÉÒÔÓÐÍêÈ«²»Í¬µÄÐÐΪ¡£ÔÚJavaÓïÑԵģ¬Java½Ó¿Ú»¹¿ÉÒÔ¶¨ÒåPublic³£Á¿¡£
    1¡¢µ¥·½·¨½Ó¿Ú
     public interface ActionListener
    {
        public abstract void actionPerformed(ActionEvent event);  
    }
    2¡¢±êʶ½Ó¿Ú
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         package java.io;
         public interface Serializable{};
     3¡¢³£Á¿½Ó¿Ú
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          public interface AppConstants
          {
               public static final DATA_SOURCE_NAME="test";
               public static final USER_NAME="test";
               public static final PASSWORD="test";
           }
     


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package com.fanxing.neibulei;
/**
*
* @author xiaxiaorui
*
*·ºÐÍ ÊÜÏÞ·ºÐÍ
*http://developer.51cto.com/art/200909/153983.htm
*/
class Info2<T>
{
private T var; // ¶¨Òå·ºÐͱäÁ¿
public T getVar() {
return var;
}
public void setVar(T var) {
this.var = var;
}

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import java.util.Arrays;
public class Sort {
 
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 public static void bubbleSort(int[] arrays)
 {
  //µÚÒ»´ÎÑ­»·´ÓµÚÒ»¸öÔªËØ¿ªÊ¼£¬µ½µ¹ÊýµÚ¶þ¸öÔªËØ
  for(int i=0;i<arrays.length-1;i++)
  {
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