Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Color;
import java.awt.Graphics;
import java.awt.geom.Ellipse2D;

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

public class Main extends JPanel {

    public void paint(Graphics g) {
        int w = getSize().width;
        int h = getSize().height;

        Ellipse2D e = new Ellipse2D.Float(w / 4.0f, h / 4.0f, w / 2.0f, h / 2.0f);
        g.setClip(e);

        g.setColor(Color.red);
        g.fillRect(0, 0, w, h);

    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new Main());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setBounds(20, 20, 500, 500);
        frame.setVisible(true);
    }
}