Java tutorial
import java.awt.Font; import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JPanel; public class Main { public static void main(String[] args) { final int w = 20; final int side = 25; final int[][] grid = new int[50][w]; JPanel panel = new JPanel() { public void paintComponent(Graphics g) { Font font = new Font("WingDings", Font.PLAIN, 14); g.setFont(font); int off = 0; for (int i = 0; i < 256 * 256; i++) { if (font.canDisplay((char) i)) { off++; grid[off / w][off % w] = i; int x = off % w * side; int y = (off / w) * side + side; g.drawString("" + (char) i, x, y); } } } }; JFrame frame = new JFrame(); panel.setSize(300, 300); frame.getContentPane().add(panel); frame.setSize(300, 300); frame.setVisible(true); } }