System fonts display : Font « 2D Graphics « Java Tutorial

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

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsEnvironment;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class SystemFontDisplayer extends JFrame {
  DisplayPanel displayPanel;

  String[] fontStyleLabels = { "Plain", "Bold", "Italic", "Bold&Italic" };
  int BOLDITALIC = Font.BOLD | Font.ITALIC;
  int[] fontStyles = { Font.PLAIN, Font.BOLD, Font.ITALIC, BOLDITALIC };
  String[] fontSizeLabels = { "8", "9", "10", "11", "12", "14", "18", "25",
      "36", "72" };
  JComboBox fontsBox, 
  fontStylesBox = new JComboBox(fontStyleLabels), fontSizesBox  = new JComboBox(fontSizeLabels);

  public SystemFontDisplayer() {
    Container container = getContentPane();
    displayPanel = new DisplayPanel();
    container.add(displayPanel);
    JPanel controlPanel = new JPanel();
    controlPanel.setLayout(new GridLayout(1, 3));

    fontsBox= new JComboBox(displayPanel.fontFamilyNames);
    fontsBox.setSelectedItem("Arial"); 
    fontsBox.addActionListener(new ComboBoxListener());

    fontStylesBox.addActionListener(new ComboBoxListener());

    fontSizesBox.setSelectedItem("36");
    fontSizesBox.addActionListener(new ComboBoxListener());
    controlPanel.add(fontsBox);
    controlPanel.add(fontStylesBox);
    controlPanel.add(fontSizesBox);
    container.add(BorderLayout.SOUTH, controlPanel);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    pack();
    setSize(400, 250);
    setVisible(true);
  }

  public static void main(String arg[]) {
    new SystemFontDisplayer();
  }

  class ComboBoxListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      JComboBox tempBox = (JComboBox) e.getSource();

      if (tempBox.equals(fontsBox)) {
        displayPanel.fontFamilyName = (String) tempBox.getSelectedItem();
        displayPanel.repaint();
      } else if (tempBox.equals(fontStylesBox)) {
        displayPanel.fontStyle = fontStyles[tempBox.getSelectedIndex()];
        displayPanel.repaint();
      } else if (tempBox.equals(fontSizesBox)) {
        displayPanel.fontSize = Integer.parseInt((String) tempBox
            .getSelectedItem());
        displayPanel.repaint();
      }
    }
  }

  class DisplayPanel extends JPanel {
    String fontFamilyName;
    int fontStyle;
    int fontSize;
    String[] fontFamilyNames;
    public DisplayPanel() {
      fontFamilyName = "Arial";
      fontStyle = Font.PLAIN;
      fontSize = 36;
      GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
      fontFamilyNames = ge.getAvailableFontFamilyNames();
      setSize(400, 225); 
    }
    public void update(Graphics g) {
      g.clearRect(0, 0, getWidth(), getHeight());
      paintComponent(g);
    }
    public void paintComponent(Graphics g) {
      super.paintComponent(g);
      Graphics2D g2D = (Graphics2D) g;
      g2D.setFont(new Font(fontFamilyName, fontStyle, fontSize));
      g2D.drawString("Java 2D Fonts", 25, 100);
    }
  }
}

16.23.Font
	16.23.1.	java.awt.Font
	16.23.2.	Creating Serif Font
	16.23.3.	Create Bold and Italic font
	16.23.4.	Show fonts with mouse click
	16.23.5.	To change the size and/or style of a font, you call its deriveFont() method
	16.23.6.	Display font info.
	16.23.7.	To get all available fonts in your system
	16.23.8.	To get the font names
	16.23.9.	Show all Fonts installed in your system
	16.23.10.	Fonts exercise: a font chooser
	16.23.11.	Display font in a grid
	16.23.12.	Create font from true type font
	16.23.13.	System fonts display