rectangle.java

j2me学习 简单例子

package example.demoprimaryui.graphicsone;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;

public class Rectangle extends Canvas {

	/**
	 * <p>Rectangle的构造函数</p>
	 */
	public Rectangle() {

	}

	/**
	 * <p>绘制方法</p>
	 * @see javax.microedition.midlet.Canvas#paint()
	 */
	protected void paint(Graphics g) {
		clear(g) ;
		//不填充
		g.setColor(255,0,0) ;
		g.drawRect(5,5,100,20);
		//填充
		g.setColor(0,255,0) ;
		g.fillRect(5,30,100,20);
		
		g.setColor(0,0,255) ;
		g.drawRoundRect(5,55,100,20,20,20);
		g.setColor(255,0,255) ;
		g.fillRoundRect(5,80,100,20,20,20);
	}
	/**
	 * <p>清屏方法,进行画面的初始化</p>
	 * 
	 */
	public void clear(Graphics g)
	{
		//把屏幕清成白色
		g.setColor(255,255,255);
		g.fillRect(0,0,getWidth(),getHeight());
	}
}