图片不能显示的问题 - 黑马程序员技术交流社区

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JWindow;
public class StartWindow extends JWindow
{
String imgName = "/images/love.png";//在images目录下存放的图片
Toolkit tool = Toolkit.getDefaultToolkit();
Image img = tool.createImage(imgName);//tool.getImage(imgName);
int scnWidth = (int)tool.getScreenSize().getWidth();
int scnHeight = (int)tool.getScreenSize().getHeight();
int imgWidth = img.getWidth(this);
int imgHeight = img.getHeight(this);
StartWindow()
{
guiInit();
//添加了鼠标单击事件，单击则退出程序
addMouseListener(new MouseAdapter()
{
@Override
public void mouseClicked(MouseEvent e)
{
// TODO Auto-generated method stub
StartWindow.this.dispose();
System.exit(0);
}
});
}
void guiInit()
{
//this.setBackground(Color.blue);
this.setBounds(scnWidth/2 - imgWidth/2, scnHeight/2 - imgHeight/2, imgWidth, imgHeight);
this.setVisible(true);
this.toFront();
}
public void paint(Graphics g)
{
g.drawImage(img, 0, 0, this);//运行后，没有任何反应
//下面的可以正常显示
// g.draw3DRect(0, 0, imgWidth-1, imgHeight-1, true);
// g.drawString(""+imgWidth, 10, 10);
// g.drawLine(0, 0, imgWidth-1, imgHeight-1);
}
}

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