client.java

3种用Java写的算法 其中包括了DES凯撒 编译软件用的是Intell J IDEA

/**
 * Created by IntelliJ IDEA.
 * User: ${040421220 郑天南}
 * Date: 2007-4-12
 * Time: 13:53:50
 */


import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.net.Socket;
import java.net.InetAddress;
import java.io.*;

public class Client
{
    public static void main(String[] args)
    {
       /*   clFrame frame=new clFrame();
          frame.setDefaultCloseOperation(clFrame.EXIT_ON_CLOSE);
          frame.setVisible(true);      */

    }
}

class clFrame extends JFrame
{
      public clFrame()
      {
            dimframe=new Dimension(500,550);
            this.setSize(dimframe);
            this.setTitle("Winock-Client");
            Container cp=getContentPane();
            clPanel panel=new clPanel();
            cp.add(panel);
      }

    private Dimension dimframe;
}

class clPanel extends JPanel
{
    public clPanel()
    {
         FlowLayout flow=new FlowLayout();
         setLayout(flow);

         label1=new JLabel("The Message you received");
         add(label1);

         recvtext=new JTextArea(10,40);
         add(recvtext);

         label2=new JLabel("The Message you will send");
         add(label2);

         sendtext=new JTextArea(10,40);
         add(sendtext);



         sendbutton=new JButton("Send");
         sendbutton.addActionListener(new ActionListener()
                                            {
                                               public void actionPerformed(ActionEvent event)
                                               {
                                                          sendmessage();
                                               }
                                            });
         add(sendbutton);
    }

    //发送消息
    private void sendmessage()
    {
        try
        {
          clsocket=new Socket(InetAddress.getLocalHost(),6629);
          String text=sendtext.getText();
          PrintWriter textsend=new PrintWriter(clsocket.getOutputStream());
          textsend.println(text);
          textsend.flush();
          clsocket.shutdownOutput();


          BufferedReader in=new BufferedReader(new InputStreamReader(clsocket.getInputStream()));
          recvtext.setText(in.readLine());

          in.close();
        }
        catch(IOException ex)
        {

        }
    }
  
    private Socket clsocket;
    private JLabel label1;
    private JLabel label2;
    private JLabel label3;
    private JTextField info;
    private JTextArea sendtext;
    private JTextArea recvtext;
    private JButton sendbutton;
    private JButton submit;
}