Disabling the Close Button on a JFrame in Java

[technika]

Hello, I am creating my project in java programming language and while working on it, I want to remove the close button from some of the Frames so that user can't able to close that window without clicking on the close button. So, I want to create a window which will not have Close button. I am not having any idea about it, but if you are having any idea for it, then please help me to do that.

[Praetor]

Hey, this is quiet simple thing to achieve in java. You just need to make use of the line of the code in your program and you will able to remove the close button from that window:

JFrame f = new JFrame();
int set = f.getDefaultCloseOperation(); 
f.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

[Katty]

Hello, if you want to remove the close button from your window of the frame then you just need to make use of the code below and get your problem solved. By using the code below you will able to get the window which is not having any type of close button :

setUndecorated(true);  
getRootPane().setWindowDecorationStyle(JRootPane.NONE);

[kelfro]

Hello, I think you need to make use of the code below and then you will able to get the solution for the removing close button on a JFrame in java:

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 closebutton extends JFrame 
{
  public closebutton() throws HeadlessException 
{
    this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
    JButton b1 = new JButton("Close");
    b1.addActionListener(new ActionListener() 
{
      public void actionPerformed(ActionEvent e)
 {
        System.exit(0);
      }
    });

    this.setLayout(new FlowLayout(FlowLayout.CENTER));
    this.setSize(new Dimension(200, 200));
    this.getContentPane().add(b1);
  }

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

[Zecho]

You just need to add the line of code below in your program:

this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

For getting more knowledge in java you must need to refer the books below and get your problem solved:

• Java Language Specification
• Java Native Interface: Programmer's Guide and Specification
• Core Servlets and JavaServer Pages
• Thinking in Java
• Advanced Programming for the Java 2 Platform

[Reegan]

Hello, for solving your problem, it is necessary to use one of the following solution code in your program. So, just use one of the below:

this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

Or you can simply use the code below:

setUndecorated(true);
getRootPane().setWindowDecorationStyle(JRootPane.NONE);