Thread: What makes the lower car stay on the bottom right corner of the window?

Hey guys, I was writing and trying out this code that I found in a book but I don't understand what part of the code makes the second car stay in the lower right corner of the screen. Could anybody help?

import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
 
/*
 * A car shape that can be positioned anywhere on the screen.
 */
 
public class Car 
{
	private int xLeft;
	private int yTop;
 
/* 
 * Constructs a car with a given top left corner.
 */
	public Car(int x, int y)
	{
		xLeft = x;
		yTop = y;
	}
 
/*
 * Draws the car.
 */
 
	public void draw(Graphics2D g2)
	{
		Rectangle body = new Rectangle(xLeft, yTop + 10, 60,10);
		Ellipse2D.Double frontTire = new Ellipse2D.Double(xLeft + 10, yTop + 20, 10,10);
		Ellipse2D.Double rearTire = new Ellipse2D.Double(xLeft + 40, yTop + 20, 10,10);
 
		// The bottom of the front windshield.
		Point2D.Double r1 = new Point2D.Double(xLeft + 10, yTop + 10);
 
		// The front of the roof.
		Point2D.Double r2 = new Point2D.Double(xLeft + 20, yTop);
 
		// The rear of the roof
		Point2D.Double r3 = new Point2D.Double(xLeft + 40, yTop);
 
		// The bottom of the rear windshield 
		Point2D.Double r4 = new Point2D.Double(xLeft + 50, yTop + 10);
 
		Line2D.Double frontWindshield = new Line2D.Double(r1,r2);
		Line2D.Double roofTop = new Line2D.Double(r2,r3);
		Line2D.Double rearWindshield = new Line2D.Double(r3,r4);
 
		g2.draw(body);
		g2.draw(frontTire);
		g2.draw(rearTire);
		g2.draw(frontWindshield);
		g2.draw(roofTop);
		g2.draw(rearWindshield);
	}
}

import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JComponent;
 
/*
 * This component draws two car shapes.
 */
 
public class CarComponent extends JComponent
{
	public void paintComponent(Graphics g)
	{
		Graphics2D g2 = (Graphics2D) g;
 
		Car car1 = new Car(0,0);
 
		int x = getWidth() - 60;
		int y = getHeight() - 30;
 
		Car car2 = new Car(x,y);
 
		car1.draw(g2);
		car2.draw(g2);
	}
}

import javax.swing.JFrame;
 
public class CarViewer 
{
	public static void main(String[] args)
	{
		JFrame frame = new JFrame();
 
		frame.setSize(300,400);
		frame.setTitle("Two cars");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
		CarComponent component = new CarComponent();
		frame.add(component);
 
		frame.setVisible(true);
	}
 
}

Thanks a lot.