midlet3.java

这是郭克华老师的J2ME视频的源代码

package prj12_1;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Graphics;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet3 extends MIDlet {
	private MyCanvas mc = new MyCanvas();
	private Display dis;
	protected void startApp() throws MIDletStateChangeException {
		dis = Display.getDisplay(this);
		mc.setTitle("MyCanvas");
		dis.setCurrent(mc);

	}
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub

	}

	protected void pauseApp() {
		// TODO Auto-generated method stub

	}

	
	class MyCanvas extends Canvas{
		public void paint(Graphics g){//参数g负责在画布上画图
			//设置画笔颜色
			g.setColor(200, 100, 20);//各个分量在0-255之间
			//画实心矩形
			g.fillRect(10,20, 100,25);
			//画圆角实心矩形
			g.fillRoundRect(100,200, 100,25,10,10);
			//画实心弧线
			g.fillArc(100,150, 100,25,90,360);
			//实心三角形
			g.fillTriangle(10,20, 30,45, 168,97);
			
		}
	}

}