linetest.java

java手机程序开发随书光盘源代码

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class LineTest extends MIDlet{


	Display display;
	MyCanvas myCanvas;

	public LineTest(){
		display = Display.getDisplay(this);
		myCanvas = new MyCanvas();

	}


	public void startApp(){
		display.setCurrent(myCanvas);
		
	}

	public void pauseApp(){
		
	}

	public void destroyApp(boolean unconditional){
		
	}

}

class MyCanvas extends Canvas{

	public void paint(Graphics g){
		
		g.setColor(0xFFFFFF);
		g.fillRect(0, 0, getWidth(), getHeight());
		g.setColor(0);
		g.drawLine(getWidth()/4, getHeight()/4, getWidth()*3/4, getHeight()/4);
		g.setStrokeStyle(Graphics.DOTTED);
		g.drawLine(getWidth()/4, getHeight()*3/4, getWidth()*3/4, getHeight()*3/4);
		
	}
}