Draw font leading,ascent and descent line in Java

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
/*from  w w  w  . ja  v a  2  s.  co m*/
import javax.swing.JComponent;
import javax.swing.JFrame;

class MyCanvas extends JComponent {
  public void paint(Graphics g) {
    g.setFont (new Font ("TimesRoman", Font.BOLD | Font.ITALIC, 48));
    g.translate (2, 100);
    FontMetrics fm = null;
    int ascent, descent, leading, width1, width2, height;
    String string1 = "java2s.com";
    String string2 = "Java tutorial";
    int xPos = 25, yPos = 50;
    fm = g.getFontMetrics();
    ascent  = fm.getAscent();
    descent = fm.getDescent();
    leading = fm.getLeading();
    height  = fm.getHeight();
    width1  = fm.stringWidth (string1);
    width2  = fm.stringWidth (string2);
    g.drawString (string1, xPos, yPos);
    g.drawLine (xPos, yPos - ascent - leading,
                xPos + width1, yPos - ascent - leading);
    g.drawLine (xPos, yPos - ascent,
                xPos + width1, yPos - ascent);
    g.drawLine (xPos, yPos,
                xPos + width1, yPos);
    g.drawLine (xPos, yPos + descent,
                xPos + width1, yPos + descent);
    g.drawString (string2, xPos, yPos+height);
    g.drawLine (xPos, yPos - ascent - leading + height,
                xPos + width2, yPos - ascent - leading + height);
    g.drawLine (xPos, yPos - ascent + height,
                xPos + width2, yPos - ascent + height);
    g.drawLine (xPos, yPos + height,
                xPos + width2, yPos + height);
    g.drawLine (xPos, yPos + descent + height,
                xPos + width2, yPos + descent + height);
  }
}

public class Main {
  public static void main(String[] a) {
    JFrame window = new JFrame();
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setBounds(30, 30, 450, 450);
    window.getContentPane().add(new MyCanvas());
    window.setVisible(true);
  }
}