在按 YES 退出 Java 程序之前确认
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confirmation before press YES to exit program in Java
提问by jefferyleo
private void windowClosing(java.awt.event.WindowEvent evt)
{
int confirmed = JOptionPane.showConfirmDialog(null, "Exit Program?","EXIT",JOptionPane.YES_NO_OPTION);
if(confirmed == JOptionPane.YES_OPTION)
{
dispose();
}
}
I want to close program by pressing Close Window Button with confirmation...But when I choose "No" to back to my Jframe, it still helps me to exit the program???
我想通过按下关闭窗口按钮并确认来关闭程序......但是当我选择“否”返回我的 Jframe 时，它仍然可以帮助我退出程序？？？
采纳答案by Tomas Bisciak
From what i understand you want something like this
据我了解你想要这样的东西
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
int confirmed = JOptionPane.showConfirmDialog(null,
"Are you sure you want to exit the program?", "Exit Program Message Box",
JOptionPane.YES_NO_OPTION);
if (confirmed == JOptionPane.YES_OPTION) {
dispose();
}
}
});
If you want to use it on some button do similiar function to button. Put listener on it and do same. But I'm not sure if I get your question right. But If you want to use button use ActionListenerand action performedmethod.
如果您想在某个按钮上使用它，请执行与按钮类似的功能。把听众放在上面并做同样的事情。但我不确定你的问题是否正确。但是如果要使用按钮，请使用ActionListener和操作执行方法。
check question - Java - Message when closing JFrame Window
检查问题 - Java - 关闭 JFrame 窗口时的消息
回答by homesh
Try this, it's working for me.
试试这个，它对我有用。
private void windowClosing(java.awt.event.WindowEvent evt) {
int confirmed = JOptionPane.showConfirmDialog(null, "Exit Program?","EXIT",JOptionPane.YES_NO_OPTION);
if(confirmed == JOptionPane.YES_OPTION)
{
dispose();
}
} else {
setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
回答by Udeesha Induwara
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent evt){
int x = JOptionPane.showConfirmDialog(null,
"Are you sure you want to exit ?", "Comform !",
JOptionPane.YES_NO_OPTION);
if(x == JOptionPane.YES_OPTION) {
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}else{
setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
}
}
});
Chek this.
查这个。
