japplet_cad.java

CAD画图小程序

package pack_CAD;

import java.awt.BorderLayout;
import java.awt.Graphics;
import java.util.Calendar;

import javax.swing.JPanel;
import javax.swing.JApplet;
import javax.swing.JLabel;
import java.awt.Rectangle;

public class JApplet_CAD extends JApplet implements Runnable {

	

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private JPanel jContentPane = null;
	private Thread thread=null;
	private int hour;
	private int minute;
	private int second;
	private JLabel jLabel1 = null;
	public void paint(Graphics arg0) {
		// TODO Auto-generated method stub
		super.paint(arg0);
		int x,y,r=80;
		arg0.fillOval(94,94,12,12);
		for (int i=0;i<60;i++){
			x=(int)(100+r*Math.sin(Math.PI/30*i));
			y=(int)(100-r*Math.cos(Math.PI/30*i));
			if(i%5==0){
			arg0.fillOval(x-5,y-5,10,10);}
			else{
				arg0.fillOval(x-1,y-1,2,2);
			
			}
		}
	    
	    }
	
	
	
	
	
	
	public void run() {
		// TODO Auto-generated method stub
		 Graphics g=this.jContentPane.getGraphics();
		    while(true){
		    	this.play(this.getCodeBase(),"1.au");
		    	g.setColor(this.jContentPane.getBackground());
		    	drawHMS(g);
		    	
		    	Calendar c=Calendar.getInstance();
		    	hour=c.get(Calendar.HOUR);
		    	minute=c.get(Calendar.MINUTE);
		    	second=c.get(Calendar.SECOND);
		    	String str;
		    	str=hour+":"+minute+":"+second;
		    	this.jLabel1.setText(str);
		    	
		    	
		    	
		    	g.setColor(this.jContentPane.getForeground());
		    	int x;
				int y;
				double cita;
				drawHMS(g);
		    	
		    	cita=second/60.0*2*Math.PI;
		    	x=(int)(100+72*Math.sin(cita));
		    	y=(int)(100-72*Math.sin(cita));
		    	g.drawLine(100,100,x,y);

		    	g.fillOval(94,94,12,12);
		    	
		    	try{
		    	Thread.sleep(1000);}
		    	catch (InterruptedException e){
	            e.printStackTrace();}}
		    }






	private void drawHMS(Graphics g) {
		int x;
		int y;
		double cita;;
		
		cita=(hour+minute/60.0+second/3600.0)/12*2*Math.PI;
		x=(int)(100+55*Math.sin(cita));
		y=(int)(100-55*Math.cos(cita));
		g.drawLine(100,100,x,y);
		
		cita=(minute+second/60.0)/60.0*2*Math.PI;
		x=(int)(100+68*Math.sin(cita));
		y=(int)(100-68*Math.cos(cita));
		g.drawLine(100,100,x,y);
	}

	/**
	 * This is the xxx default constructor
	 */
	public JApplet_CAD() {
		super();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	public void init() {
		this.setSize(300, 200);
		this.setContentPane(getJContentPane());
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			jLabel1 = new JLabel();
			jLabel1.setBounds(new Rectangle(138, 95, 38, 18));
			jLabel1.setText("JLabel");
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(jLabel1, null);
		}
		return jContentPane;
	}






	public void start() {
		// TODO Auto-generated method stub
		super.start();
		if (this.thread==null){
			this.thread=new Thread(this);
			this.thread.start();
	}

	}}