import java.awt.Frame;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.Graphics2D; // Used for anti-aliasing
import java.awt.RenderingHints; // Used for anti-aliasing

public class GraphicsObjectPlacementWithFrame
{
	public static void main(String[] args)
	{
		// Create a frame
		Frame frame = new Frame();

		// Set the size of the frame
		frame.setSize(500, 500);

		// Have the frame appear in the center of the screen
		frame.setLocationRelativeTo(null);

		// Make the frame not resizable
		frame.setResizable(false);

		// Give the frame a title
		frame.setTitle("Object Placement with Frame");

		// Create (instantiate) an instance of the 'GraphicsCanvas' class
		GraphicsCanvas canvas = new GraphicsCanvas();

		// Set the canvas background color to yellow
		canvas.setBackground(Color.yellow);

		// Add the canvas to the frame
		frame.add(canvas);

		// Make the frame visible
		frame.setVisible(true);

		// Close and destroy the window (frame) when a closing event is
		//  detected; without this section of code, it can be difficult
		//  for a user to end the program and make the frame go away;
		//  note that with a JFrame (as opposed to a Frame), closing a
		//  window can be handled with a single line of code
		frame.addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				e.getWindow().dispose();
				System.exit(0);
			}
		});
	}
}

// The 'GraphicsCanvas' class becomes a type of canvas since it extends
//  the 'Canvas' class
class GraphicsCanvas extends Canvas
{
	// Display the graphics, text, and image in the frame
	public void paint(Graphics g)
	{
		// This line causes graphics and text to be rendered with anti-aliasing
		//  turned on, making the overall display look smoother and cleaner
		((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

		// Draw a line, an oval (circle), and an arc
		g.setColor(Color.blue);
		g.drawLine(280, 50, 400, 150);
		g.fillOval(34, 336, 100, 100);
		g.drawArc(30, 75, 100, 250, 45, 90);

		// Draw a rectangle and fill it in
		g.drawRect(20, 150, 100, 100);
		g.setColor(Color.cyan);
		g.fillRect(21, 151, 99, 99);

		// Draw a rounded rectangle
		g.setColor(Color.red);
		g.drawRoundRect(150, 75, 100, 250, 45, 90);

		// Draw a four-sided polygon
		g.setColor(Color.green);
		int[] xCoords = {350, 440, 400, 390};
		int[] yCoords = {30, 10, 40, 90};
		g.drawPolygon(xCoords, yCoords, 4);

		// Draw some text
		g.setColor(Color.black);
		g.setFont(new Font("Arial", Font.BOLD, 24));
		g.drawString("Hello, World!", 15, 40);

		// Display a diskfile image
		Image image = Toolkit.getDefaultToolkit().getImage("data_files/davebaby.jpg");
		g.drawImage(image, 280, 200, this);
	}
}