Drawing String In Different Colors

Question

Hi!
I need to do the following. Using DrawString method, I need to make a special character, each time it appears in string, invisible(but not to remove it from string). So I decided to draw it in a background color(If you know some other way to hide it, please share it with me). But other letters should be in foreground colors. How can I define only that letter in different(background) color?
If you understood my problem, please help me to solve it.

Answer 1

This program will do it :
import java.awt.event.*;  
import java.awt.*;
public class DrawS extends Frame
public DrawS()
     addWindowListener(new WindowAdapter()
    {     public void windowClosing(WindowEvent ev)
          {     dispose();
               System.exit(0);
     setBounds(50,50,450,400);
     setBackground(Color.lightGray);
     setForeground(Color.red);
    setVisible(true);
public void paint(Graphics g)
     super.paint(g);
     String s = "this is a string";
     char   c = 'i';
     g.drawString(s,50,50);
     FontMetrics fm = getFontMetrics(g.getFont());
     int x = 50;
     for (int j=0; j < s.length(); j++)
          if (s.charAt(j) == c) g.setColor(getBackground());
               else              g.setColor(getForeground());
          g.drawString(s.substring(j,j+1),x,100);
          x = x + fm.charWidth(s.charAt(j));
public static void main(String[] args )
     new DrawS();
Noah