computer_client.java

服务器计算,客户端输入应用(JAVA)

import java.net.*;import java.io.*;
import java.awt.*;import java.awt.event.*;
import java.applet.*;
public class Computer_client extends Applet 
implements Runnable,ActionListener
{ Button 计算;TextField 输入三边长度文本框,计算结果文本框;
  Socket socket=null;
  DataInputStream in=null; DataOutputStream out=null;
  Thread thread; 
 public void init()
 {setLayout(new GridLayout(2,2));
  Panel p1=new Panel(),p2=new Panel(); 
  计算=new Button(" 计算");
  输入三边长度文本框=new TextField(12);计算结果文本框=new TextField(12);
  p1.add(new Label("输入三角形三边的长度,用逗号或空格分隔:"));
p1.add( 输入三边长度文本框);
  p2.add(new Label("计算结果："));p2.add(计算结果文本框);p2.add(计算);
  计算.addActionListener(this);
  add(p1);add(p2);
 }
 public void start()
 { try
   {socket = new Socket(this.getCodeBase().getHost(), 4331);
   in = new DataInputStream(socket.getInputStream());
   out = new DataOutputStream(socket.getOutputStream());
   } 
   catch (IOException e){}
  if (thread == null)
   {thread = new Thread(this);
    thread.setPriority(Thread.MIN_PRIORITY);
    thread.start();
   }
 }
 public void run()
 {String s=null;
    while(true)
     { try{s=in.readUTF();
          }
         catch (IOException e) 
{计算结果文本框.setText("与服务器已断开");break;}   
       计算结果文本框.setText(s);
     }
 }
 public void actionPerformed(ActionEvent e)
 {if (e.getSource()==计算)
     { String s=输入三边长度文本框.getText();
       if(s!=null)		      
        { try{out.writeUTF(s);}
          catch(IOException e1){} 
        }               
     }
 }
}