Learn to Draw Graphics with Swing in Java: A Step-by-Step Guide

In this tutorial, We are going to discuss how to draw graphics using Swing let's get started.

In this tutorial we are going to make a simple application that draws simple graphics like the below:

Step 1: Create a class named MouseEventEx.java which extends MouseMotionAdapter.

    public class MouseEventEx extends MouseMotionAdapter {
    

}

Step2: Create an object of JFrame and construct the frame properties

public class MouseEventEx extends MouseMotionAdapter {
    JFrame frame = new JFrame();

    MouseEventEx(){
        frame.setSize(1000,1000);
        frame.setVisible(true);
        JLabel label = new JLabel();

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.addMouseMotionListener(this);
    }
   

}

Step 3: Create the mouseDragged method which extends from MouseMotionAdapter

public class MouseEventEx extends MouseMotionAdapter {
    JFrame frame = new JFrame();

    MouseEventEx(){
        frame.setSize(1000,1000);
        frame.setVisible(true);
        JLabel label = new JLabel();

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.addMouseMotionListener(this);
    }
   
    public void  mouseDragged(MouseEvent me){
        Graphics graphics =frame.getGraphics();
        graphics.setColor(Color.RED);
        graphics.fillOval(me.getX(),me.getY(),30,30);

    }

}

Step 4: Create the main  method and create an object of MouseEventEx

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;

public class MouseEventEx extends MouseMotionAdapter {
    JFrame frame = new JFrame();

    MouseEventEx(){
        frame.setSize(1000,1000);
        frame.setVisible(true);
        JLabel label = new JLabel();

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.addMouseMotionListener(this);
    }

    public void  mouseDragged(MouseEvent me){
        Graphics graphics =frame.getGraphics();
        graphics.setColor(Color.RED);
        graphics.fillOval(me.getX(),me.getY(),30,30);

    }
    public static void main(String[] args) {
        new MouseEventEx();
    }

}