javaSwing写关闭窗口的提示框实例

// 关闭的事件 
this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); 

JOptionPane.showMessageDialog(jPanel, "提示消息", "标题",JOptionPane.WARNING_MESSAGE);  

int n = JOptionPane.showConfirmDialog(null, "你高兴吗?", "标题",JOptionPane.YES_NO_OPTION);//返回的是按钮的index  i=0或者1  

Object[] obj2 ={ "足球", "篮球", "乒乓球" };
String s = (String) JOptionPane.showInputDialog(null,"请选择你的爱好:\n", "爱好", JOptionPane.PLAIN_MESSAGE, new ImageIcon("icon.png"), obj2, "足球");