Java画图2

桃扇骨 2021-09-28 07:12 282阅读 0赞

public class PaintUtil2 extends JPanel{
    	/**
    	 * 	画图
    	 */
    	private static final long serialVersionUID = -898711734428727206L;
    	private static BufferedImage image;
    	
    	static {
    		image = loadImage("background.png");
    	}
    	
    	/** 读取图片 */
    	public static BufferedImage loadImage(String fileName) {
    		try {
    			BufferedImage img = ImageIO.read(PaintUtil2.class.getResource(fileName)); //同包下读取图片
    			System.out.println(img);
    			return img;
    		}catch(Exception e) {
    			e.printStackTrace();
    			throw new RuntimeException();
    		}
    	}
    	
    	/** 重写paint()画 g:画笔 */
    	public void paint(Graphics g) {
    		g.drawImage(image, 0, 0, null);//在坐标（0，0）处画图，先画图再写字，不然会覆盖
    		
    		g.setColor(Color.red);//设置颜色
    		g.drawString("abcde", 111, 111 );//打字
    		g.drawString("ABCDE", 300, 330);
    		
    	}	
    
    	public static void main(String[] args) {
    		JFrame frame = new JFrame("打飞机");
    		PaintUtil2 pu = new PaintUtil2();//要求PaintUtil2类是继承 JPanel父类
    		
    		frame.add(pu);
    		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		frame.setSize(400, 600);
    		frame.setLocationRelativeTo(null); //中间
    		frame.setVisible(true); //1)设计窗口可见  2)尽快调用paint()
    	}
    }

结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70]: /images/20210923/11aa1d1f2f2c4c449453dd1256bbfce4.png