import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import javax.swing.JComponent;

public class DrawEllipseComponent extends JComponent
{
	public void paintComponent(Graphics g)
	{
		Graphics2D g2 = (Graphics2D)g;
		Ellipse2D.Double ellipse = new Ellipse2D.Double(0,0,this.getWidth(),this.getHeight());
		g2.draw(ellipse);
		g2.setColor(Color.GREEN);
		g2.fill(ellipse);
	}
}

import javax.swing.JFrame;

public class DrawEllipse
{
	public static void main(String[] args)
	{
		DrawEllipseComponent ellipse = new DrawEllipseComponent();

		JFrame frame = new JFrame();
		frame.setSize(300, 400);
		frame.setTitle("An Ellipse");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.add(ellipse);
		frame.setVisible(true);
	}
}

public void paintComponent(Graphics g)
	{
		Graphics2D g2 = (Graphics2D)g;
		Ellipse2D.Double ellipse = new Ellipse2D.Double(0,0,this.getWidth(),this.getHeight());
		g2.draw(ellipse);
		g2.setColor(Color.GREEN);
		g2.fill(ellipse);
	}

import java.awt.Graphics2D;
import java.awt.Rectangle;

public class BarChart
{
	public BarChart(int x, int y, int t, int w, String name)
	{
		xTop = x;
		yTop = y;
		top = t;
		width = w;
		title = name;
	}
	public void draw(Graphics2D g2)
	{
		Rectangle rect = new Rectangle(xTop, yTop, top, width);
		g2.draw(rect);
		g2.drawString(title, xTop + 5, yTop + 20);
	}
	private int xTop;
	private int yTop;
	private int top;
	private int width;
	private String title;
}

import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JComponent;

public class BarChartComponent extends JComponent
{
	public void paintComponent(Graphics g)
	{
		Graphics2D g2 = (Graphics2D)g;

		BarChart myBar1 = new BarChart(0, 0, 420, 30, "Golden Gate");
		myBar1.draw(g2);

		BarChart myBar2 = new BarChart(0, 40, 159, 30, "Brooklyn");
		myBar2.draw(g2);

		BarChart myBar3 = new BarChart(0, 80, 215, 30, "Delaware Memorial");
		myBar3.draw(g2);

		BarChart myBar4 = new BarChart(0, 120, 380, 30, "Mackinac");
		myBar4.draw(g2);
	}
}

import javax.swing.JFrame;

public class BarChartViewer
{
	public static void main(String[] args)
	{
		BarChartComponent myBar = new BarChartComponent();

		JFrame frame = new JFrame();
		frame.setSize(500, 200);
		frame.setTitle("BarChartViewer");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.add(myBar);
		frame.setVisible(true);
	}
}