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class A ...{
         public String show(D obj)...{
                return ("A and D");
         } 
         public String show(A obj)...{
                return ("A and A");
         } 

class B extends A...{
         public String show(B obj)...{
                return ("B and B");
         }
         public String show(A obj)...{
                return ("B and A");
         } 
}
class C extends B...{} 
class D extends B...{} 
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        A a1 = new A();
        A a2 = new B();
        B b = new B();


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import java.util.*;
public class bycomma{
 public static String[] splitStringByComma(String source){
   if(source==null||source.trim().equals(""))
    ......

Java£ºÆËË·ÃÔÀëµÄString

 ¡¡¡¡JavaÄÚ´æ·ÖÅä:
¡¡¡¡1. ¼Ä´æÆ÷£ºÎÒÃÇÔÚ³ÌÐòÖÐÎÞ·¨¿ØÖÆ£»
¡¡¡¡2. Õ»£º´æ·Å»ù±¾ÀàÐ͵ÄÊý¾ÝºÍ¶ÔÏóµÄÒýÓ㬵«¶ÔÏó±¾Éí²»´æ·ÅÔÚÕ»ÖУ¬¶ø
¡¡¡¡ÊÇ´æ·ÅÔÚ¶ÑÖУ»
¡¡¡¡3. ¶Ñ£º´æ·ÅÓÃnew²úÉúµÄÊý¾Ý£»
¡¡¡¡4. ¾²Ì¬Óò£º´æ·ÅÔÚ¶ÔÏóÖÐÓÃstatic¶¨ÒåµÄ¾²Ì¬³ÉÔ±£»
¡¡¡¡5. ³£Á¿³Ø£º´æ·Å³£Á¿£»
¡¡¡¡6. ·ÇRAM´æ´¢£ºÓ²Å̵ÈÓÀ¾Ã´æ´ ......

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package com.softeem.demo;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.net.ServerSocket;
import java.net.Socket;
class Student implem ......

javaµÚ10Ìì´úÂë(Ïß³Ì)

/******************TestThread.java begin****************************/ 
public class TestThread {
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Object obj=new Object();
  
  print p=new print(obj);
   ......
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