import java.awt.GridLayout;

import javax.swing.JFrame;


public class TestFigurePanel extends JFrame {

	public TestFigurePanel()
	{
		setLayout(new GridLayout(2,3,5,5));
		add(new FigurePanel(FigurePanel.LINE));
		add(new FigurePanel(FigurePanel.RECTANGLE));
		add(new FigurePanel(FigurePanel.ROUND_RECTANGLE));
		add(new FigurePanel(FigurePanel.OVAL));
		add(new FigurePanel(FigurePanel.RECTANGLE, true));
		add(new FigurePanel(FigurePanel.RECTANGLE, false));
		add(new FigurePanel(FigurePanel.ROUND_RECTANGLE, true));
		add(new FigurePanel(FigurePanel.OVAL, true));
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		TestFigurePanel frame = new TestFigurePanel();
		frame.setSize(400,300);
		frame.setTitle("TestFigurePanel");
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}

}
 

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;

import javax.swing.JPanel;


public class FigurePanel extends JPanel {
	
	// define constants
	public static final int LINE = 1;
	public static final int RECTANGLE = 2;
	public static final int ROUND_RECTANGLE = 3;
	public static final int OVAL = 4;
	
	private int type = 1;
	private boolean filled = false;
	
	public FigurePanel()
	{
		
	}
	
	public FigurePanel(int type)
	{
		this.type = type;
	}
	
	public FigurePanel(int type, boolean filled)
	{
		this.type = type;
		this.filled = filled;
	}
	
	protected void paintComponent(Graphics g)
	{
		super.paintComponents(g);
		
		int width = getWidth();
		int height = getHeight();
		
		System.out.println("width = " + width + " heigth = "+ height);
		System.out.println("width = " + ((int)width*0.1) + " heigth = "+ height);
		switch (type)
		{
		case LINE:
		{
			g.setColor(Color.BLACK);
			g.drawLine(10, 10, width - 10, height - 10);
			g.drawLine(width - 10, 10, 10, height - 10);
		}
		case RECTANGLE:
		{
			g.setColor(Color.BLUE);
			
			
			if (filled)
			{
				g.fillRect((int)(0.1*width), (int)(0.1 * height), (int)(0.8 *width), (int)(0.8*height));
			}
			else
			{
				g.drawRect((int)(0.1*width), (int)(0.1 * height), (int)(0.8 *width), (int)(0.8*height));
			}
		}
		case ROUND_RECTANGLE:
		{
			g.setColor(Color.RED);
			if (filled)
			{
				g.fillRoundRect((int)(0.1*width), (int)(0.1 * height), (int)(0.8 *width), (int)(0.8*height), 40, 40);
			}
			else
			{
				g.drawRoundRect((int)(0.1*width), (int)(0.1 * height), (int)(0.8 *width), (int)(0.8*height), 40, 40);
			}
		}
		case OVAL:
		{
			g.setColor(Color.BLACK);
			if (filled)
			{
				g.fillOval((int)(0.1*width), (int)(0.1 * height), (int)(0.8 *width), (int)(0.8*height));
			}
			else
			{
				g.drawOval((int)(0.1*width), (int)(0.1 * height), (int)(0.8 *width), (int)(0.8*height));
			}
		}
		}
	}
	
	public void setType(int type)
	{
		this.type = type;
	}
	public int getType()
	{
		return type;
	}
	
	public void setFilled(boolean filled)
	{
		this.filled = filled;
		repaint();
	}
	
	public boolean isFilled()
	{
		return filled;
	}
	
	public Dimension getPreferredSize()
	{
		return new Dimension(80, 80);
	}
}