Java applet实现的时钟

int sx=0;
int sy=0;
//画出指针
Shape hourShape=getShape(radius*0.5,radius*0.07,radius*0.1,hAngle);
g.setColor(Color.gray.darker());
g.draw(hourShape);
//画出分针
import java.applet.*;
import java.awt.*;
import java.awt.image.*;
import java.util.Calendar;
import java.awt.geom.*;
timer=new Thread(this);
timer.start();
}
public void paint(Graphics gc) {
Graphics2D g=(Graphics2D)gc;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
private int second;
private Thread timeቤተ መጻሕፍቲ ባይዱ;
public void init() {
radius=80;
xCenter=80;
yCenter=80;
initTime();
resize(300,260);
}
public void initTime() {
}
public void stop() {
timer=null;
}
public void run() {
Thread me=Thread.currentThread();
while (me==timer) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
g.fillOval(x-2,y-2,4,4);
}
//画出时间
String m=(minute<10)?(0+String.valueOf(minute)):String.valueOf(minute);
String s=(second<10)?(0+String.valueOf(second)):String.valueOf(second);
String h=(hour==0)?"12":String.valueOf(hour);
g.drawString("当前时间 "+h+":"+m+":"+s,40,(int)(yCenter+radius+20));
Shape minuteShape=getShape(radius*0.8,radius*0.06,radius*0.1,mAngle);
g.setColor(Color.gray.darker());
g.draw(minuteShape);
//画出秒针
g.drawLine(getPoint(radius*0.9,sAngle).x,getPoint(radius*0.8,sAngle).y,xCenter,yCenter);
Point p3=getPoint(r3,angle+180);
Point p4=getPoint(r2,angle+270);
GeneralPath gp=new GeneralPath();
gp.append(new Line2D.Double(p1.x,p1.y,p2.x,p2.y),true);
g.setColor(Color.gray);
g.drawOval((int)(xCenter-radius),(int)(yCenter-radius),(int)(radius*2),(int)(radius*2));
//画中心
g.fillOval(xCenter-1,yCenter-1,2,2);
Calendar c=Calendar.getInstance();
hour=c.get(Calendar.HOUR);
minute=c.get(Calendar.MINUTE);
second=c.get(Calendar.SECOND);
}
public void start() {
}
private Point getPoint(double r,double angle) {
int x=(int)(Math.cos(angle*Math.PI/180-Math.PI/2)*r)+xCenter;
int y=(int)(Math.sin(angle*Math.PI/180-Math.PI/2)*r)+yCenter;
return new Point(x,y);
}
private Shape getShape(double r1,double r2,double r3,double angle) {
Point p1=getPoint(r1,angle);
Point p2=getPoint(r2,angle+90);
//时针
double hAngle=(hour+minute/60+second/3600)*30;
int hx=0;
int hy=0;
//分针
double mAngle=(minute+second/60)*6;
int mx=0;
int my=0;
//秒针
double sAngle=second*6;
gp.lineTo(p3.x,p3.y);
gp.lineTo(p4.x,p4.y);
gp.closePath();
return gp;
}
public void update(Graphics g) {
B
ufferedImage bi=new BufferedImage(getWidth(),getHeight(),BufferedImage.TYPE_INT_RGB);
//画出表盘
for (int i=0;i<=360;i+=30) {
int x=(int)(Math.cos(i*Math.PI/180-Math.PI/2)*radius)+xCenter;
int y=(int)(Math.sin(i*Math.PI/180-Math.PI/2)*radius)+yCenter;
Graphics2D gc=(Graphics2D)bi.getGraphics();
gc.setColor(getBackground());
gc.fillRect(0,0,getWidth(),getHeight());
paint(gc);
gc.dispose();
g.drawImage(bi,0,0,getWidth(),getHeight(),this);
break;
}
initTime();
repaint();
}
}
}
public class Clock extends Applet implements Runnable {
private double radius;
private int xCenter;
private int yCenter;
private int hour;
private int minute;