线程初步运用------简单时钟的实现

         代码如下：

package cn.cjl.study0410.Calendar;

import java.awt.*;
import javax.swing.JFrame;
import javax.swing.JLabel;

/**
 * 主类
 * 
 * @author lingzi
 * 
 */
public class Clock extends JFrame {
	Image offScreenImage;
	
	private static final long serialVersionUID = 1L;
	Rectangle circleinner = new Rectangle(100, 100, 200, 200);
	Rectangle center = new Rectangle(196, 196, 8, 8);
	Rectangle circleouter = new Rectangle(80, 80, 240, 240);
	Rectangle second = new Rectangle(200, 100, 2, 100);
	// Rectangle center=new Rectangle(200,200,8,8);

	private int x1 = 200;
	private int y1 = 120;
	private int mx = 200;
	private int my = 140;
	private int hx = 200;
	private int hy = 150;
	private int x2 = 200;
	private int y2 = 200;
	/**
	 * 重写update方法
	 */
	public void update(Graphics g){
		System.out.println("双缓冲方法调用");
		//创建一幅用于双缓冲的、可变的、可在屏幕外绘制的图像。 
		this.offScreenImage=this.createImage(400,400);
		//得到缓冲图像的画笔
		Graphics offg=this.offScreenImage.getGraphics();
		offg.setColor(Color.BLACK);
		offg.fillRect(0, 0, 400, 400);
		//调用paint(),将缓冲图像的画笔传入
		paint(offg);
		//将词缓冲图像一次性绘到代表屏幕的Graphics对象，即该方法传入的g上
		g.drawImage(offScreenImage,0,0,null);
		
		
	}
	public Clock() {
		super();
		setTitle("时钟");
		setBounds(0, 0, 400, 400);
		setLayout(new FlowLayout());
		
//		 JLabel o12=new JLabel("12");
//		 o12.setBounds(center.x,center.y,center.width,center.height);
//		 o12.setBackground(Color.GREEN);
//		 o12.setBounds(center.x,center.y-200,center.width,center.height);
//		 o12.setFont(new Font("Harrington",1,20));
//		 this.add(o12);
		setVisible(true);
		// Graphics g=getGraphics();
		new PointMove();


	}
	/**
	 * 绘制背景方法
	 */
	public void paint(Graphics g) {
		super.paint(g);
		g.setColor(Color.BLACK);
		g.fillRect(0, 0, 400, 400);
		g.setColor(Color.DARK_GRAY);
		g.fillOval(circleouter.x, circleouter.y, circleouter.width, circleouter.height);
		g.setColor(Color.BLUE);
		g.fillOval(circleinner.x, circleinner.y, circleinner.width, circleinner.height);
		g.setColor(Color.RED);
		g.fillOval(center.x, center.y, center.width, center.height);
		g.setColor(Color.RED);
		g.setFont(new Font("Harrington",1,20));
		g.setColor(Color.BLACK);
		g.drawString("12",center.x, center.y - 100 + 16);
		g.drawString("6",center.x, center.y + 100 - 4);
		g.drawString("3",center.x + 100 - 4, center.y);
		g.drawString("9",center.x - 100 + 4, center.y);

		g.setColor(Color.RED);
		
		g.drawLine(x1, y1, x2, y2);
		g.setColor(Color.YELLOW);
		g.drawLine(mx, my, x2, y2);
		g.setColor(Color.DARK_GRAY);
		g.drawLine(hx, hy, x2, y2);
		g.setColor(Color.red);
		
//测试线
//		g.drawLine((int)(200+50*(Math.sqrt(2))),(int)(200-50*(Math.sqrt(2))), x2, y2);
	}

	/**
	 * 继承Runnable接口的内部类，控制指针移动
	 * 
	 * @author lingzi
	 * 
	 */
	private class PointMove implements Runnable {
		Thread thread = null;

		/**
		 * PointMove类构造方法
		 */
		public PointMove() {
			if (null == thread) {
				thread = new Thread(this, "秒针移动");
			}
			// 启动线程
			thread.start();

		}

		public void run() {
			
			int count = 0;
			int minutecount =1;
			int hourcount=1;

			// 无限循环
			while (true) {
				

				try {
					repaint();
						x1 = (int) (200 + (90 * (Math.sin((2*Math.PI) / 60* count))));
						y1 = (int) (200 - (90 * (Math.cos((2*Math.PI) / 60* count))));
						System.out.println(count);
						count++;
					if(count==60){
						mx = (int) (200 + (80 * (Math.sin((2*Math.PI) / 60* minutecount))));
						my = (int) (200 - (80 * (Math.cos((2*Math.PI) / 60* minutecount))));
						count=1;
						minutecount++;
						System.out.print("MINUTE走动1");
						}
					if(minutecount==60){
						hx = (int) (200 + (60 * (Math.sin((2*Math.PI) / 60* hourcount))));
						hy = (int) (200 - (60 * (Math.cos((2*Math.PI) / 60* hourcount))));
						minutecount=1;
						System.out.print("HOUR走动1");
					}
					Thread.sleep(1000);
				} catch (Exception e) {
					break;
				}
			}
		}

	}

	/**
	 * 主方法
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		new Clock();
	}

}

 

 

评论

1 楼 convolute 2011-04-13