class MyBkFrame extends JFrame{
MyBkFrame( String name ){
JPanel pan = new JPanel(new BorderLayout());
ImageIcon ii = new ImageIcon(name);//加载图片
JLabel lab = new JLabel(ii);//图片放到Label内
lab.setBounds(0, 0,ii.getIconWidth(), ii.getIconHeight());//设置Label的大小正好是图片大小
this.getLayeredPane().setLayout(null);//
this.setTitle("测试Java的背景图片设置");
this.getLayeredPane().add(lab, new Integer(Integer.MIN_VALUE));//把Label(内有图片)放到工作区的下层,做背景图片
this.setContentPane(pan);//设置装有操作组件的Panel为ContentPnel
pan.setOpaque(false);//设置Pan为透明
int w = Toolkit.getDefaultToolkit().getScreenSize().width;
int h = Toolkit.getDefaultToolkit().getScreenSize().height;
setBounds(0, 0, w, h);
setVisible(true);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}
转载于:https://www.cnblogs.com/arbboter/archive/2012/07/23/4225258.html