Draw font metrics : Font Metrics « 2D Graphics « Java Tutorial

1. Java Tutorial
2. 2D Graphics
3. Font Metrics

// This example is from the book _Java AWT Reference_ by John Zukowski.
// Written by John Zukowski.  Copyright (c) 1997 O'Reilly & Associates.
// You may study, use, modify, and distribute this example for any purpose.
// This example is provided WITHOUT WARRANTY either expressed or
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;

import javax.swing.JFrame;
import javax.swing.JPanel;
public class metrics extends JPanel {
    metrics () {
        setFont (new Font ("TimesRoman", Font.BOLD | Font.ITALIC, 48));
        setSize (225, 175);
    }
    public void paint (Graphics g) {
        g.translate (100, 100);
        FontMetrics fm = null;
        int ascent, descent, leading, width1, width2, height;
        String string1 = "dsdas";
        String string2 = "asdf";
        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 static void main (String[] args) {
      JFrame f = new JFrame();
      f.add(new metrics());
      f.setSize(300,300);
      f.setVisible(true);
    }
}

16.24.Font Metrics
	16.24.1.	Font Metrics: the wealth of dimensional data about a font
	16.24.2.	Font base line
	16.24.3.	Getting Char with based on current font
	16.24.4.	calls stringWidth (String) to center several text messages
	16.24.5.	Center text.
	16.24.6.	Draw text to the left
	16.24.7.	Draw text to the right
	16.24.8.	Draw text to the center
	16.24.9.	Text justify
	16.24.10.	Draw font metrics
	16.24.11.	Display a text in 3 dimensions
	16.24.12.	Obtain FontMetrics of different fonts