jishiqi.java

这是一个由于JAVA编写的电子钟 背景能随时间更换

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.util.*;
import java.awt.geom.*;
import java.text.*;
import java.awt.image.*;
import javax.swing.Timer;
import java.net.*;

public class jishiqi  extends JFrame
{
private GregorianCalendar now=new GregorianCalendar();
private MyLabel ml=new MyLabel();
private JLabel Lweek=new JLabel();
private JLabel Ldate=new JLabel();
private JLabel Lmark=new JLabel();
private JLabel Ltime=new JLabel();
public jishiqi()
{
  setTitle("Timer");
  setSize(500,480);
  setLocation(100,100);
  setResizable(false);
  ml.setSize(500,440);

  Lmark.setText("ZQIAN");Lmark.setLocation(225,80);Lmark.setSize(100,30);
  Lmark.setFont(new Font("Bookman Old Style",Font.BOLD,15));Lmark.setForeground(Color.darkGray);

  Lweek.setSize(60,20);Lweek.setLocation(315,190);Lweek.setForeground(Color.darkGray);
  Lweek.setFont(new Font("Arial Narrow",Font.BOLD,12));

  if(now.get(Calendar.DAY_OF_WEEK)==1) Lweek.setText("SUNDAY");
  else if(now.get(Calendar.DAY_OF_WEEK)==2) Lweek.setText("MONDAY");
  else if(now.get(Calendar.DAY_OF_WEEK)==3) Lweek.setText("TUESDAY");
  else if(now.get(Calendar.DAY_OF_WEEK)==4) Lweek.setText("WEDNESDAY");
  else if(now.get(Calendar.DAY_OF_WEEK)==5) Lweek.setText("THURSDAY");
  else if(now.get(Calendar.DAY_OF_WEEK)==6) Lweek.setText("FRIDAY");
  else if(now.get(Calendar.DAY_OF_WEEK)==7) Lweek.setText("SATURDAY");
  Ldate.setSize(20,20);Ldate.setLocation(370,190);Ldate.setForeground(Color.darkGray);
  Ldate.setFont(new Font("Fixedsys",Font.BOLD,12));Ldate.setText(""+now.get(Calendar.DATE));

  Ltime.setSize(500,30);Ltime.setLocation(100,400);
  Ltime.setForeground(new Color(0,64,128));
  Ltime.setFont(new Font("Fixedsys",Font.PLAIN,15));

  Container con=getContentPane();
  con.setBackground(Color.white);
  con.setLayout(null);
  con.add(Lweek);con.add(Ldate);con.add(Lmark);con.add(Ltime);
  con.add(ml);


}
public static void main(String []args)
{
  jishiqi jsq=new jishiqi();
  jsq.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  jsq.show();
}

class MyLabel extends JLabel implements Runnable
{
  Thread th=null;
  double arch=0;double arcm=0;double arcs=0;
  int a=50;
  boolean flag=false;
  int id=0;
  Image img[]=new Image[5];
  BufferedImage bi=null;
  Graphics gg=null;
  URL url[]=new URL[]{MyLabel.class.getResource("1.jpg"),MyLabel.class.getResource("2.jpg"),
       MyLabel.class.getResource("3.jpg"),MyLabel.class.getResource("4.jpg"),
       MyLabel.class.getResource("5.jpg"),MyLabel.class.getResource("6.jpg")};

  public MyLabel()
  {
   GregorianCalendar  jj=new GregorianCalendar();
   arch=now.get(Calendar.HOUR)*30;arcm=now.get(Calendar.MINUTE)*6;arcs=now.get(Calendar.SECOND)*6;

   Toolkit tk=this.getToolkit();
   img[0]=tk.createImage(url[0]);
   img[1]=tk.createImage(url[1]);
   img[2]=tk.createImage(url[2]);
   img[3]=tk.createImage(url[3]);
   img[4]=tk.createImage(url[4]);
   try
   {
    MediaTracker mt=new MediaTracker(this);
    mt.addImage(img[0],0);
    mt.addImage(img[1],0);
    mt.addImage(img[2],0);
    mt.addImage(img[3],0);
    mt.addImage(img[4],0);
    mt.waitForAll();
   }catch(Exception err){}
   bi=new  BufferedImage(310,310,BufferedImage.TYPE_INT_ARGB);
   gg=bi.createGraphics();
   th=new Thread(this);
   th.start();
  }

  public void paint(Graphics g1)
  {
   Graphics2D g=(Graphics2D)g1;

   for(int i=0;i<360;i=i+6)
   {
    g.setColor(Color.blue);
    g.setStroke(new BasicStroke(2));
    if(i%30==0&&i!=90&&i!=180&&i!=270)
    {
     g.setColor(Color.red);
     g.drawLine(250+(int)(Math.cos(i*Math.PI/180)*150),200+(int)(Math.sin(i*Math.PI/180)*155),250+(int)(Math.cos(i*Math.PI/180)*150),200+(int)(Math.sin(i*Math.PI/180)*155));
    }
    if(i%90==0)
    {
     g.setColor(Color.blue);
     g.setStroke(new BasicStroke(5));
     g.drawLine(250+(int)(Math.cos(i*Math.PI/180)*150),200+(int)(Math.sin(i*Math.PI/180)*155),250+(int)(Math.cos(i*Math.PI/180)*150),200+(int)(Math.sin(i*Math.PI/180)*155));
    }
    g.drawLine(250+(int)(Math.cos(i*Math.PI/180)*150),200+(int)(Math.sin(i*Math.PI/180)*153),250+(int)(Math.cos(i*Math.PI/180)*150),200+(int)(Math.sin(i*Math.PI/180)*153));
   }

   Line2D.Double lh=new Line2D.Double(250,200,250+Math.cos((arch-90)*Math.PI/180)*50,200+Math.sin((arch-90)*Math.PI/180)*50);
   g.setStroke(new BasicStroke(6));
   g.setColor(new Color(0,128,0));
   g.draw(lh);
   Line2D.Double lm=new Line2D.Double(250,200,250+Math.cos((arcm-90)*Math.PI/180)*80,200+Math.sin((arcm-90)*Math.PI/180)*80);
   g.setStroke(new BasicStroke(3));
   g.setColor(new Color(0,128,192));
   g.draw(lm);
   Line2D.Double ls=new Line2D.Double(250,200,250+Math.cos((arcs-90)*Math.PI/180)*100,200+Math.sin((arcs-90)*Math.PI/180)*100);
   g.setStroke(new BasicStroke(1));
   g.setColor(new Color((int)(Math.random()*255),(int)(Math.random()*255),(int)(Math.random()*255)));
   g.draw(ls);

   gg.drawImage(img[id],0,0,310,310,0,0,320,320,this);
   for(int j=0;j<310;j++)
   {
    for(int i=0;i<310;i++)
    {
     int pix=bi.getRGB(i,j);
     Color c=new Color(pix);
     int r=c.getRed();
     int gr=c.getGreen();
     int b=c.getBlue();
     int newpix=new Color(r,gr,b,a).getRGB();
     bi.setRGB(i,j,newpix);
    }
   }
   g.clip(new Ellipse2D.Double(95,45,310,310));
   g.setColor(Color.white);
   g.drawImage(bi,95,45,this);

  }

  public void run()
  {
   while(th!=null)
   {
    DateFormat df=DateFormat.getDateTimeInstance(DateFormat.FULL,DateFormat.FULL);
    String s=df.format(new Date());
    Ltime.setText(s);
    arcs+=6;arcm+=0.1;arch+=0.1/60;
    if(arcs>=360)
    {
     arcs=0;
    }
    if(arcm>=360)
    {
     arcm=0;
    }
    if(arch>=360)
    {
     arch=0;
    }
    if(flag)
    {
     a+=10;
     if(a==50){flag=!flag;}
    }
    else
    {
     a-=10;
     if(a==0)
     {
      flag=!flag;
      id++;
      if(id==4) id=0;
     }
    }
    repaint();
    try
    {
     Thread.currentThread().sleep(1000);
    }catch(Exception err){}
   }
  }
}

}