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----·þÎñÆ÷¶Ë
import java.io.IOException;
import java.net.*;
public class TCPServer {
 public static void main(String[] args) throws Exception{
ServerSocket server = new ServerSocket(97); //binding listening
Socket s = server.accept(); //blocking
System.out.println("a client connect!");
 }
}
----¿Í»§¶Ë
import java.net.*;
 
public class TCPClient {
 public static void main (String args[]) throws Exception {
Socket s = new Socket("127.0.0.1",97);
 }
}
---½á¹û£º
D:\java\ten>java TCPserver
Exception in thread "main" java.net.BindException:Cannot assign reguested address:JVM_Bind
  at java.net.PlainSocketImpl.socketBind<Native Method>
  at java.net.PlainSocketImpl.bind<PlainSocketImpl.java:359>
  at java.net.ServerSocket.bind<ServerSocket.java:319>
  at java.net.ServerSocket.<init><ServerSocket.java:185>
  at java.net.ServerSocket.<init><ServerSocket.java:97>
  at TCPServer.main(TCPServer.java:7)


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 //=============================Êä³öÆæÊý
public class OddTest {
public static boolean isOdd(int i){
return i % 2 != 0; //±È½Ï i % 2 == 0;×¢£º -1%2 = -1
}
public static void main(String[] args) {
for(int i = -10; i <= 10; i++) {
System.out.println(isOdd(i));
}
}
}
// ......

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 String stra[] = {"g","b","c","h","k"};//ԭʼÊý×é
  String strb[] = {"g","k"};   //ÒÆ³ýµÄÔªËØ
  ArrayList list = new ArrayList();
//·½·¨Ò»
  for(int i=0;i<stra.length;i++){
   int n=0;
  ......
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