Clouds in the Air

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class Clouds
{
	public static void main(String[] args)
	{
		JFrame frame = new JFrame();
		frame.setSize(500,500);
		frame.setVisible(true);
		//frame.setBackground(Color.blue);
		Cloud myCloud = new Cloud(300, 300);//component

		frame.getContentPane().add(myCloud);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}	//class cloud ends here (that is one class)

class Cloud extends JComponent
{
	private int posX, posY;

	public Cloud(int x, int y){
		this.posX = x;
		this.posY = y;
	}

	public void paint(Graphics g)
	{
		Graphics2D g2d = (Graphics2D)g;		//remember that casting is here

		int w = getWidth();
		int h = getHeight();
		g2d.setColor(Color.blue);
		g2d.fillRect(0, 0, w, h);

		g.setColor(Color.white);

		g.fillOval(posX, posY, 110, 50);

		for(int i = 0; i < 5; i++)
		{
			int x = (int)(Math.random() * 110 + posX);
			int y = (int)(Math.random() * 50 + posY);
			g.fillOval(x, y, 110, 50);
		}
	/*
		g.setColor(Color.white);
		g.fillOval(300, 300, 75, 50);
		for(int i = 0; i < 20; i++)
		{
			int x = (int)(Math.random()*350);
			int y = (int)(Math.random()*325);
			g.setColor(Color.white);
			g.fillOval(x, y, 75, 50);

		}

	*/
		g2d.dispose();

	}
}