//SocketAppServer.java
import java.net.*;
import java.io.*;
public class SocketAppServer{
  public static void main(String args[])
{
  ServerSocket ss=null;
  int port=134;
  String hello="From Server:Hello World!";
  try
{
   ss=new ServerSocket(port);//建立服務器端socket連接，其偵聽端口為port，port與客戶端相同
   }
   
catch(IOException e)
{
   System.out.println(e);
   System.exit(1);}
while(true){
try{
   System.out.println("正在等待連接端口port="+port+"......");
   Socket cs=ss.accept();//偵聽連接請求并連接
   InputStream in=cs.getinputStream();
   DataInputStream dout=new DataInputStream(in);//獲取輸入流，并創建相應的數據輸入流
   String name=din.readUTF();//從輸入流中讀取數據
   OutputStream out=cs.getOutputStream();
   DataOutputStream dout=new DataOutputStream(out);//獲取輸出流，并創建相應的數據輸出流
   dout.writeUTF(hello+"your name:"+name);//將字符串寫入輸出流
   System.out.println("已成功連接端口port="+port);
   System.out.println("========================");
   in.close();
   out.close();
   cs.close();//關閉相應流及socket連接
}

catch(IOException e){
   System.out.println(e);
            }
}
}
}