Java Program using JFrame to create a GUI

Java Program using JFrame to create a GUI

In java programming, we can also use JFrame to create a Graphical user interface (GUI) using JFrame class.

Need to create a instance for JFrame class to have GUI in java code.

JFrame frame = new JFrame("JFrame Title")

Example Java Program to Create a Frame (GUI)

//Testing Frame using JFrame class in java code
//importing java swing package for GUI

import javax.swing.*;

public class FrameTest {
	public static void main(String[] args){
                 // Creating a instance 'frame' for java JFrame class
                 // and Frame title is 'JFrame Test Java Code'.
		JFrame frame = new JFrame("JFrame Test Java Code");
                //Setting Frame size width 500 and height 200
		frame.setSize(500,200);
                // Setting Frame visibility
		frame.setVisible(true);
                // Adding close operation as default in Frame.
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
	}
}

Once executing this java program, Empty Frame will be popped up as above and closes if we click close button in the frame title.

Java Program to create a GUI inheriting JFrame class

Below Java code is used to create JFrame GUI inheriting the JFrame class.

//Testing Frame using JFrame class in java code
//importing java swing package for GUI

import javax.swing.*;

public class FrameTest extends JFrame {

	public FrameTest (){
                // Setting Title
		setTitle("JFrame Test Java Code");
        }

	public static void main(String[] args){
                 // Creating a instance 'frame' for java JFrame class
                 // and Frame title is 'JFrame Test Java Code'.
		FrameTest frame = new FrameTest ();
                //Setting Frame size width 500 and height 200
		frame.setSize(500,200);
                // Setting Frame visibility
		frame.setVisible(true);
                // Adding close operation as default in Frame.
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}