我想停止意外关闭我的项目。我正在使用JFrame Form作为主页。当我单击主窗口的关闭按钮时,我将退出线放在是选项中。我想在单击"无选项"时停止关闭。有什么办法吗。这是我的绳子。我正在使用 netbeans 7.3
private void formWindowClosing(java.awt.event.WindowEvent evt) {
int i= JOptionPane.showConfirmDialog(null, "Are you sure to exit?");
if (i == JOptionPane.YES_OPTION) {
System.exit(0);
} else{
new Home().setVisible(true);
}
}
怎么样
class MyGUI extends JFrame {
public MyGUI() {
setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);// <- don't close window
// when [X] is pressed
final MyGUI gui = this;
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
int i = JOptionPane.showConfirmDialog(gui,
"Are you sure to exit?", "Closing dialog",
JOptionPane.YES_NO_OPTION);
if (i == JOptionPane.YES_OPTION) {
System.exit(0);
}
}
});
setSize(200, 200);
setVisible(true);
}
//demo
public static void main(String[] args) {
new MyGUI();
}
}
你可以
像这样简单地做到这一点
Integer opt = JOptionPane.showConfirmDialog(null, "This application cannot continue without login to the databasen Are you sure you need to exit...?", "Application X", JOptionPane.YES_NO_OPTION);
if(opt== JOptionPane.NO_OPTION){
this.setVisible(true);
}else{
System.exit(0);
}