watch.java~16~

很好得jbuilder100例源代码

package untitled1;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import com.borland.jbcl.layout.*;

public class watch extends java.applet.Applet implements Runnable{
  int x = 0;
  Thread runner = null;
  boolean flag = false;
  boolean isStandalone = false;
  TextField text1 = new TextField();
  Button button1 = new Button();
  Button button2 = new Button();
  XYLayout xYLayout1 = new XYLayout();
  /**Get a parameter value*/
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  /**Construct the applet*/
  public watch() {
  }
  /**Initialize the applet*/
  public void init() {
    flag = false;
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception {
    text1.setFont(new java.awt.Font("Dialog", 0, 16));
    text1.setText("0");
    button1.setFont(new java.awt.Font("Dialog", 0, 16));
    button1.setLabel("计时");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    button2.setFont(new java.awt.Font("Dialog", 0, 16));
    button2.setLabel("清空");
    button2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button2_actionPerformed(e);
      }
    });
    this.setLayout(xYLayout1);
    this.add(button2,  new XYConstraints(200, 109, -1, -1));
    this.add(button1, new XYConstraints(200, 60, -1, -1));
    this.add(text1,  new XYConstraints(68, 88, 82, -1));
  }
  /**Get Applet information*/
  public String getAppletInfo() {
    return "Applet Information";
  }
  /**Get parameter info*/
  public String[][] getParameterInfo() {
    return null;
  }

  public void run(){
     while(true){
        int i,j;
        x += 1;
        i = (int)(x/60);
        text1.setText(String.valueOf(i)+":"+ String.valueOf(x-60*i));
        try{
           Thread.sleep(10); }
        catch(InterruptedException e){}
      }
  }

  public void start(){
  if(flag){
   if(runner==null){
      runner=new Thread(this);
      runner.start();
      }
   }
  }
  public void stop(){
   if(runner!=null){
       runner.stop();
       runner=null;
   }
  }
  void button1_actionPerformed(ActionEvent e) {
      flag = !flag;
      if (flag)
         start();
      else
         stop();
  }

  void button2_actionPerformed(ActionEvent e) {
      text1.setText("0");
      x = 0;
  }

}