用按钮单击关闭 JFrame

您将需要对要关闭的特定框架的引用，但假设您有该引用，则应关闭该框架。dispose()

jButton1.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e)
    {
       frameToClose.dispose();
    }
});

JButton b3 = new JButton("CLOSE");

b3.setBounds(50, 375, 250, 50);

b3.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e)
    {
        System.exit(0);
    }
});