Swing Examples - Creating Standard Windows

Following example showcases how to create a standard window in Swing based application.

We are using the following APIs.

• JFrame − To create a standard frame or window.

• JFrame.getContentPane() − To get the content area of the frame.

• JFrame.setSize() − To set the size of the frame.

• JFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); − To set the action when Frame is closed.

Example - Creating Standard Window in Swing Application

SwingTester.java

package com.tutorialspoint;

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.LayoutManager;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class SwingTester {
   public static void main(String[] args) {
      createWindow();
   }

   private static void createWindow() {    
      JFrame frame = new JFrame("Swing Tester");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      createUI(frame);
      frame.setSize(492, 200);      
      frame.setLocationRelativeTo(null);  
      frame.setVisible(true);
   }

   private static void createUI(JFrame frame){      
      JPanel panel = new JPanel();
      LayoutManager layout = new FlowLayout();  
      panel.setLayout(layout);       
      panel.add(new JLabel("Hello World!"));

      frame.getContentPane().add(panel, BorderLayout.CENTER);    
   }
}

Output

Compile and Run the program and verify the output −