How can we draw a rounded rectangle using the Graphics object in Java?

Graphics Class

• In Java, the drawing takes place via a Graphics object, this is an instance of the java.awt.Graphics class.
• Each Graphics object has its own coordinate system and all the methods of Graphics including those for drawing Strings, lines, rectangles, circles, polygons and etc.
• We can get access to the Graphics object through the paint(Graphics g) method.
• We can use the drawRoundRect() method that accepts x-coordinate, y-coordinate, width, height, arcWidth, and arc height to draw a rounded rectangle.

Example

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class RoundedRectangleTest extends JFrame {
   public RoundedRectangleTest() {
      setTitle("RoundedRectangle Test");
      setSize(350, 275);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setLocationRelativeTo(null);
      setVisible(true);
   }
   public void paint(Graphics g) {
      Graphics2D g2d = (Graphics2D) g;
      g2d.drawRoundRect(10, 50, 150, 150, 50, 30); // to draw a rounded rectangle.
   }
   public static void main(String []args) {
      new RoundedRectangleTest();
   }
}

Output