我有一个JPanel,我想添加一个图像作为其背景。我怎样才能做到这一点 ?frame = new JFrame("Some frame");panel1 = new JPanel();panel1.setBorder(new EmptyBorder(5, 5, 5, 5));// NEED TO ADD AN IMAGE TO THIS PANELpanel1.setLayout(cardlayout);frame.getContentPane().add(panel1);frame.setLocationByPlatform(true);frame.setVisible(true);我需要添加一个图像,我该panel怎么办?更新1 panel1 = new JPanel() { private static final long serialVersionUID = 1L; @Override public void paintComponent(Graphics g) { g.drawImage(Toolkit.getDefaultToolkit().createImage("1.jpg"), 0, 0, null); }};
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