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Java C/S mode --Client

2019-11-18 13:27:24
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來源:轉載
供稿:網友

  作者:ludejun98
  
  import java.applet.*;
  import java.awt.*;
  import java.awt.event.*;
  import java.io.*;
  import java.net.*;
  //public String str;
  
  
  class javaclient extends Panel implements ActionListener
  {
  
  
  TextField tf;
  LudCanvas cv;
  Button b;
  
  LudPanel(LudCanvas cv)
  {
  this.cv = cv;
  
  tf = new TextField("ludejun",30);
  add(tf);
  
  b = new Button("退出");
  b.addActionListener(this);
  add(b);
  b = new Button("發送");
  b.addActionListener(this);
  add(b);
  }
  
  
  public str actionPerformed(ActionEvent ev)
  {
  String str = ev.getActionCommand();
  if( str.equals("退出") )
  {
  //tf.setText("This is my first button");
  System.exit(0);
  }
  else
  {
  str = tf.getText();
  tf.setText("開始檢測發送......");
  return str;
  
  }
  }
  
  
  
  
  public static void main(String args[])
  {
  String data;
  Socket Client;
  DataInputStream InputS;
  DataInputStream KeyS;
  PRintStream OutputS;
  
  Basic h = new Basic();
  
  int i = 0;
  
  
  try
  {
  Client = new Socket(args[0],600);
  InputS = new
  DataInputStream(Client.getInputStream());
  OutputS = new PrintStream(Client.getOutputStream());
  KeyS = new DataInputStream(System.in);
  }
  catch(IOException e)
  {
  System.out.println("Cannot Connect with Server");
  return;
  }
  
  try
  {
  while (i<5)
  {
  data = KeyS.readLine();
  OutputS.println(data);
  System.out.println("ECHO From Server:"+ InputS.readLine());
  i++;
  }
  }
  catch(IOException e)
  {
  System.out.println("IOException Happened");
  }
  
  try
  {
  System.out.println("Now will end this program");
  Client.close();
  }
  catch(IOException e)
  {
  System.out.println("system cannot close socket");
  }
  }
  }
  
  
  
  //@@@@@@@@@@@@@@@@@@@@@@@222
  
  
  
  class LudCanvas extends Canvas
  {
  public void paint(Graphics g)
  {
  Rectangle r = getBounds();
  g.setColor(Color.red);
  int panelHeight = 15;
  int b = 3;
  g.drawRect(b , b , r.width-b-b , r.height-b-b-panelHeight);
  int t = 10;
  g.drawRect(t , t , r.width-t-t , r.height-t-t-panelHeight);
  
  g.drawString("The first applet of mine", 120, 30);
  
  
  Image img = Toolkit.getDefaultToolkit().getImage("ie.gif");
  
  g.drawImage(img, 50, 50, this);
  
  
  }
  
  }
  
  
  class LudPanel extends Panel implements ActionListener
  {
  TextField tf;
  LudCanvas cv;
  Button b;
  
  LudPanel(LudCanvas cv)
  {
  this.cv = cv;
  
  tf = new TextField("ludejun",30);
  add(tf);
  
  b = new Button("退出");
  b.addActionListener(this);
  add(b);
  b = new Button("發送");
  b.addActionListener(this);
  add(b);
  }
  
  
  public void actionPerformed(ActionEvent ev)
  {
  String str = ev.getActionCommand();
  if( str.equals("退出") )
  {
  //tf.setText("This is my first button");
  System.exit(0);
  }
  else
  {
  tf.setText("開始檢測發送......");
  }
  }
  }
  :em51: :em51: :em51:

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