Source Code : Disable JFrame close button

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Disable JFrame close button

    
 
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class Main extends JFrame {
  public Main() throws HeadlessException {
    this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

    JButton button = new JButton("Close");
    button.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        System.exit(0);
      }
    });

    this.setLayout(new FlowLayout(FlowLayout.CENTER));
    this.setSize(new Dimension(100, 100));
    this.getContentPane().add(button);
  }

  public static void main(String[] args) {
    new Main().setVisible(true);
  }
}

   
    
    
    
  

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