Question

java dispose()方法为什么会报错

Answer 1

class CCFrame extends JFrame { private JButton btn = new JButton("弹出新窗口"); public CCFrame() { setSize(500,300); setLocationRelativeTo(null); setVisible(true); setDefaultCloseOperation(DISPOSE_ON_CLOSE); setLayout(new FlowLayout()); add(btn); btn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { // 弹出一个新的Frame final JFrame f = new JFrame(); f.setTitle("这是新窗口"); f.setSize(300,200); f.setVisible(true); f.setLocationRelativeTo(null); f.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent arg0) { f.dispose(); } }); } }); } } 然后new CCFrame()就可以了。