JAVA模仿屏保程序(很创新)

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); } }); } }