Help with character parameter

I am a newbie. I have the following problem and I just can't get it right.............

Here it goes.

I am to create the square out of whatever character is contained in character parameter fillcharacter. Thus, if side is 5 and fillcharacter is "#", the method should display
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This is what I have so far:




import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Square extends JApplet {
int size;

public void init()
{
String input = JOptionPane.showInputDialog(
"Enter square size:");



size = Integer.parseInt( input );
}

public void squareOfCharacters( Graphics g )
{

String input = JOptionPane.showInputDialog(
"Enter Character:");

int y = 50, x = 5;

for ( int a = 1; a <= size * size; a++ ) {
g.drawString( "\n%s!\n", x += 5, y );



}
}

public void paint( Graphics g )
{
squareOfCharacters( g );
}
}