// Exercise10_6.java: Display multiplication table
import java.awt.*;
import javax.swing.*;

public class Exercise10_6 extends JFrame
{
  public Exercise10_6()
  {
    getContentPane().add(new MultiplicationTablePanel());
  }

  public static void main(String[] args)
  {
    Exercise10_6 frame = new Exercise10_6();
    frame.setSize(300, 400);
    frame.setTitle("Exercise 10.6");
    frame.setVisible(true);
  }
}

class MultiplicationTablePanel extends JPanel
{
  public void paintComponent(Graphics g)
  {
    super.paintComponent(g);
    
    int x = 10;
    int y = 40;
    String s = "";
    int i = 0;

    // Display the title
    g.setColor(Color.red);
    g.setFont(new Font("Times",Font.BOLD,20));
    g.drawString("Multiplication Table", x+50, y);

    g.setFont(new Font("Times",Font.BOLD,15));

    y += 30;
    for (i=1; i<10; i++)
      g.drawString(" "+i, x+10, y+10+i*20);

    x += 40;
    for (i=1; i<10; i++)
    {
      s = s + "   " + i;
    }
    g.drawString(s, x, y);

    y += 10;
    g.drawRect(x, y, 200, 200);

    s = "";
    y += 20;

    for (i = 1; i < 10; i++)
    {
      for (int j = 1; j < 10; j++)
      {
        if (i*j < 10)
          s = s + "   " + i*j;
        else
          s = s + " " + i*j;
      }

      g.drawString(s, x, y);
      s = "";
      y += 20;
    }
  }
}