Java Programming Adds Button in JFrame

Java Programm to Add Button in JFrame (GUI)

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

In Java JFrame, A container must be created to add some components to the JFrame.

How to create container in Java ?

Below code creates a container.

Container container = frame.getContentPane();

Need to create a container in Jframe and container is going to have various controls.

How to add button in JFrame ?

// Creates button with text 'Test Button'
JButton button = new JButton("Test Button");
// Creates button with text 'Test Button'
Container container = frame.getContentPane();
// Adding button to container of frame.
container.add(button);

Example Java Program to Add Button in JFrame (GUI)

// importing swing package for JFrame, Jbutton controls
import javax.swing.*;
// importing to use Container class
import java.awt.*;

public class ButtonTest {
	public static void main(String[] args){
		// Create JFrame for GUI frame and title as 'Add Button in JFrame Java Code'
		JFrame frame = new JFrame("Adds Button in JFrame Java Code");
		// Creates button with text 'Test Button'
		JButton button = new JButton("Test Button");
		
		//Creates a container which is going to have various controls like button.. 
		Container container = frame.getContentPane();
		// Adding button to container of frame.
		container.add(button);
		frame.setSize(500,200);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}
Output:
Adds Button in JFrame Java Code

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


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