Test5.java

// Test5.java
import java.awt.Graphics;
import java.awt.FontMetrics;
import java.awt.*;
import java.awt.geom.*;
import javax.swing.JPanel;
import javax.swing.JFrame;

public class Test5 extends JPanel
{

   GraphicsExample example = new LineStyles();  
	
    public void paintComponent(Graphics g)
    {
	super.paintComponent( g );
	this.setBackground(Color.WHITE);
	int width = getWidth();
	int height = getHeight();
	example.draw((Graphics2D) g, this);  // ask example to draw itself
    }

    public static void main( String args[] )
    {
	Test5 panel = new Test5();
	String name = panel.example.getName();
	JFrame application = new JFrame(name);
	application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	application.add(panel);
	int width = panel.example.getWidth();
	int height =panel.example.getHeight(); 
	application.setSize(width,height);
	application.setVisible(true);
    }
}

import java.awt.*;

/**
 * This interface defines the methods that must be implemented by an
 * object that is to be displayed by the GraphicsExampleFrame object
 */
public interface GraphicsExample {
    public String getName();                      // Return the example name
    public int getWidth();                        // Return its width
    public int getHeight();                       // Return its height
    public void draw(Graphics2D g, Component c);  // Draw the example
}