这也是以前写的一个东西,全屏下运行,很像是WINDOWS下的屏保,会显示时钟,并且会随机自然地碰撞.全屏状态下如需退出,请按小键盘上的0退出.
点击下载可执行的JAR文件,JDK1.5以上
import java.text.*;
import java.awt.*;
import javax.swing.*;
import java.awt.geom.*;
import java.util.*;
import java.awt.event.*;
/*
* ScreenTest.java
*
* Created on 2006年7月6日, 下午5:23
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
/**
*
* @author lbf
*/
public class ScreenTest extends JPanel implements Runnable{
/** Creates a new instance of ScreenTest */
private String time;
private Rectangle2D rd;
private int x,y,a,b;//座标值和方向值
private int rgb=0;//颜色的值
private Color color;//字体的颜色
private int width,height;//屏幕的大小
public ScreenTest(int width,int height) {
this.width=width;
this.height=height;
initWindow();
}
private void initWindow(){
x=(int)(Math.random()*300);
y=(int)(Math.random()*500);
a=1;
b=1;
this.setBackground(Color.BLACK);
this.setOpaque(true);
rd=new Rectangle2D.Double(10,10,101,10);
color=Color.YELLOW;
}
private void doColor(){
rgb=(int)(Math.random()*0xFFFFFF);
color=new Color(rgb);
}
public void paintComponent(Graphics g){
g.setColor(Color.BLACK);
g.fillRect(0,0,width,height);
g.setColor(color);
g.setFont(new Font("楷书",Font.BOLD,150));
FontMetrics fm=g.getFontMetrics();
rd=fm.getStringBounds(time,g);
g.drawString(time,x,(int)(y+rd.getHeight()));
}
private void doTime(){
Calendar cal=Calendar.getInstance();
DateFormat df=DateFormat.getTimeInstance(DateFormat.MEDIUM);
Date date=cal.getTime();
time=df.format(date);
x+=a;
y+=b;
double width1=rd.getWidth();
double height1=rd.getHeight();
rd.setRect(x,y,width1,height1);
if(rd.intersectsLine(width,0,width,height)){
doColor();
a=-1;
}
else if(rd.intersectsLine(0,0,0,height)){
doColor();
a=1;
}
else if(rd.getY()<=-80){
doColor();
b=1;
}
else if(rd.intersectsLine(0,height,width,height)){
doColor();
b=-1;
}
}
public void run(){
while(true){
try{
Thread.sleep(2);
doTime();
repaint();
}
catch(InterruptedException ie){
ie.printStackTrace();
}
}
}
public static void main(String arsg[]){
GraphicsDevice gd=GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
DisplayMode dm=gd.getDisplayMode();
int width=dm.getWidth();
int height=dm.getHeight();
System.out.println("width="+width+"\nheight="+height);
ScreenTest st=new ScreenTest(width,height);
final JFrame jf=new JFrame();
jf.getContentPane().add(st,BorderLayout.CENTER);
jf.setUndecorated(true);
gd.setFullScreenWindow(jf);
new Thread(st).start();
jf.addKeyListener(new KeyAdapter(){
public void keyReleased(KeyEvent ke){
if(ke.getKeyCode()==KeyEvent.VK_NUMPAD0)
System.exit(0);
}
});
}
}
尽管千里冰封
依然拥有晴空
你我共同品味JAVA的浓香.
posted on 2007-09-03 09:18
千里冰封 阅读(1563)
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