computer_server.java

服务器计算,客户端输入应用(JAVA)

import java.io.*;import java.net.*;
import java.util.*;import java.sql.*;
public class Computer_server 
{    public static void main(String args[])
  {  ServerSocket server=null;Server_thread thread;
      Socket you=null;
    while(true) 
    { try{ server=new ServerSocket(4331);}
      catch(IOException e1) {System.out.println("正在监听");} 
      try{ you=server.accept();}
      catch (IOException e)
      {System.out.println("正在等待客户");}
      if(you!=null) 
      {new Server_thread(you).start();   }
      else {continue;}
    }
  }
}
class Server_thread extends Thread
{  Socket socket;Connection Con=null;Statement Stmt=null;
   DataOutputStream out=null;DataInputStream  in=null;int n=0;
   String s=null;
    Server_thread(Socket t)
       { socket=t;
         try {in=new DataInputStream(socket.getInputStream());
             out=new DataOutputStream(socket.getOutputStream());
             }
         catch (IOException e)
         {}
       }  
  public void run()        
  { while(true)
    { double a[]=new double[3] ;int i=0;
       try{s=in.readUTF(); 
StringTokenizer fenxi=new StringTokenizer(s," ,");
           while(fenxi.hasMoreTokens())
             { String temp=fenxi.nextToken();
                try{a[i]=Double.valueOf(temp).doubleValue();i++;}
                catch(NumberFormatException e)
{out.writeUTF("请输入数字字符");
                      }
             }
           double p=(a[0]+a[1]+a[2])/2.0;
           out.writeUTF(" "+Math.sqrt(p*(p-a[0])*(p-a[1])*(p-a[2])));
           sleep(2);    
          }
       catch(InterruptedException e){}
       catch (IOException e) 
          {System.out.println("客户离开");
Thread.currentThread().yield();break;
          }
     }
   } 
}