import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class LoadImageDemo extends JFrame implements ActionListener
{
	private ImagePanel imagePanel;   //繪制圖像的面板
	private JButton button;
	
	public LoadImageDemo()
	{
		super("getImage");
	    setSize(400, 400);
	    
	    //獲取內容面板
	    Container container = getContentPane();
	    
	    //創建用于繪制圖像的面板
	    imagePanel = new ImagePanel();
	    container.add(imagePanel, BorderLayout.CENTER);
	    
	    //創建按鈕
	    button = new JButton("下幀圖像");
	    //設置字體
	    button.setFont(new Font("Serif", Font.PLAIN, 14));
	    //注冊監聽器
	    button.addActionListener(this);
	    container.add(button, BorderLayout.SOUTH);
	    
	    setVisible(true);
	    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
	
	public void actionPerformed(ActionEvent event)
	{
		imagePanel.showNext();
	}
	
	public static void main(String[] args) 
	{
		LoadImageDemo application = new LoadImageDemo();
	}

    class ImagePanel extends JPanel 
    {
    	private ImageIcon images;
    
    	
        public ImagePanel() 
        {
        	super();
        	setBackground(Color.WHITE);
      
                //載入圖像
        //	images= new ImageIcon("boy01.png");
        images= new ImageIcon("Image.jpg");
                             
        
        }
        
        public void paintComponent(Graphics g) 
        {
            Graphics2D g2d=(Graphics2D)g;
            g2d.setColor(getBackground());
            g2d.fillRect(0, 0, getWidth(), getHeight());
            //繪制圖像,坐標為屏幕中心 
            int x = (this.getWidth() - images.getIconWidth())/2;
            int y = (this.getHeight() - images.getIconHeight())/2;
            images.paintIcon(this, g, x, y);
        }
        //該方法顯示下一幀圖像
        public void showNext()
        {
      
        	repaint();
        }
    }
}