import javax.microedition.lcdui.*;
public class myCanvas extends Canvas{
	public int px,py;
	public int arc1,arc2;
	public myCanvas(){
		px=py=30;
		arc1=40;
		arc2=270;
	}
	public  void paint(Graphics g) {
		g.setColor(0,0,0);
		g.fillRect(0, 0, 240, 280);
		g.setColor(255,0,0);
		g.fillRect(130, 110, 30, 40);
		g.drawLine(30, 30, 30, 150);
		g.setColor(0, 0, 255);
		g.drawString("得分：100", 30, 150, Graphics.LEFT|Graphics.TOP);
		g.setColor(255, 255, 0);
		g.fillArc(px, py, 20, 20, arc1, arc2);
	}
	public void keyPressed(int n){
		System.out.println("您按下了"+n);
		arc1=40;
		arc2=270;
		if(n==52){
			px-=8;
		}
		if(n==54){
			px+=8;
			if(px>this.getWidth()){
				px=0;
			}
		}
		this.repaint();
	}
	public void keyReleased(int n){
		arc1=60;
		arc2=230;
		this.repaint();
		System.out.println("您抬起了"+n);
	}
	public void keyRepeated(int n){
		
	}
}