jsplashwindow.java

这里面有150个从简单到难的java 程序的源代码

//JSplashWindow.java
//Demos how to show a splash window
import javax.swing.*;

import java.awt.*;

import java.net.*;


public  class JSplashWindow extends JWindow implements Runnable {

  Thread splashThread=null;

  public JSplashWindow() {

    setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
 
   JPanel splash = new JPanel(new BorderLayout());
 
   URL url = getClass().getResource("/images/winter.jpg");


    if(url != null){
 
     splash.add(new JLabel(new ImageIcon(url)),
  
    BorderLayout.CENTER);

    }


    setContentPane(splash);

 
   Dimension screen = getToolkit().getScreenSize();

    pack();
 
   setLocation((screen.width - getSize().width) / 2,
(screen.height - getSize().height) / 2);

  }

 
 public void start(){

    this.toFront();
  
  splashThread=new Thread(this);
 
   splashThread.start();


  }


  public void run(){
  
  try {
    
 show();
     
 Thread.sleep(5000);
   
 }
    
catch (Exception ex) {
      ex.printStackTrace();
    }
    this.dispose();
  }

  static void showFrame(String title){
    JFrame frame = new JFrame(title);
    frame.setSize(400,300);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    //Center the window
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension frameSize = frame.getSize();
    if (frameSize.height > screenSize.height) {
      frameSize.height = screenSize.height;
    }
    if (frameSize.width > screenSize.width) {
      frameSize.width = screenSize.width;
    }
    frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);

    frame.setVisible(true);

  }

  public static void main(String[] args) {
    showFrame("Demo splash window");
    JSplashWindow splash = new JSplashWindow();
    splash.start();
    
  }
}