Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to disable close button on a JFrame in Java?
To disable the close button, let us first create a frame −
JFrame frame = new JFrame("Login!");Use the setDefaultCloseOperation() to set the status of the close button. Set it to DO_NOTHING_ON_CLOSE to disable it −
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
The following is an example to disable close button on a JFrame in Java −
Example
package my;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
public class SwingDemo {
public static void main(String[] args) throws Exception {
JFrame frame = new JFrame("Login!");
JLabel label1, label2, label3;
frame.setLayout(new GridLayout(2, 2));
label1 = new JLabel("DeptId", SwingConstants.CENTER);
label2 = new JLabel("SSN", SwingConstants.CENTER);
label3 = new JLabel("Password", SwingConstants.CENTER);
JTextField deptid = new JTextField(20);
JTextField ssn = new JTextField(20);
JPasswordField passwd = new JPasswordField();
passwd.setEchoChar('*');
frame.add(label1); frame.add(label2); frame.add(label3); frame.add(deptid); frame.add(ssn); frame.add(passwd);
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); frame.setSize(550, 400);
frame.setVisible(true);
}
}The output is as follows displaying the close button but it won’t work since we disabled it above −
Output
Updated on: 30-Jul-2019
664 Views
Advertisements