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Copy pathJava221_gui.java
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49 lines (38 loc) · 1.12 KB
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package java0915_gui;
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
class MessageTest extends JFrame {
JButton btn;
public MessageTest() {
btn = new JButton("click");
add(btn, BorderLayout.CENTER);
setSize(300, 300);
setVisible(true);
setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
exit();
}
});
}
public void exit() {
// 알림창을 띄우기 위해서 JOptionPane을 사용한다.
// JOptionPane.showMessageDialog(this, "정말로 종료하시겠습니까?");
// showMessageDialog() : 단순히 알림창만 뜨게한다.
int chk = JOptionPane.showConfirmDialog(this, "정말로 종료하시겠습니까?", "종료", JOptionPane.YES_NO_OPTION);
if (chk == JOptionPane.YES_OPTION) {
System.exit(0);
} else if (chk == JOptionPane.NO_OPTION) {
}
}
}
public class Java221_gui {
public static void main(String[] args) {
new MessageTest();
}
}