fan.java

applet风扇小程序

package com.test;

import java.awt.Graphics;

import javax.swing.JPanel;

public class Fan extends JPanel implements Runnable {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	private static int jiao = 0;
	int sudu;

	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		int xc = getSize().width / 2;
		int yc = getSize().height / 2;
		int ra = (int) (Math.min(getSize().width, getSize().height) * 0.4);

		int x = xc - ra;
		int y = yc - ra;

		g.fillArc(x, y, 2 * ra, 2 * ra, jiao + 0, 30);
		g.fillArc(x, y, 2 * ra, 2 * ra, jiao + 90, 30);
		g.fillArc(x, y, 2 * ra, 2 * ra, jiao + 180, 30);
		g.fillArc(x, y, 2 * ra, 2 * ra, jiao + 270, 30);

	}

	public void run() {
		while (true) {
			while (FanApplet.round) {
				while (FanApplet.right == true) {
					if (FanApplet.right == false) {
						break;
					}
					jiao -= 20;
					try {
						this.repaint();
						if (FanApplet.round == false) {
							break;
						}
						sudu = FanApplet.su;
						Thread.sleep(sudu);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}

				while (FanApplet.right == false) {
					if (FanApplet.right == true) {
						break;
					}
					jiao += 20;
					try {

						this.repaint();
						if (FanApplet.round == false) {
							break;
						}
						sudu = FanApplet.su;
						Thread.sleep(sudu);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}

			}
		}

	}
}