Java program

[FRANKIESANTOS]

I need help with writing this program below. I can't seem to get the program to draw a diamond. I can only make a box. It is for homework on Tuesday, Feb.22nd. I appreciate any help I can get. Thanks.

//This program will read an odd number in the range of 1-19
//to specify the number if rows in a diamond and then display
//that diamond of the appropriate size.

import javax.swing.JOptionPane;

public class SF01 {
public static void main( String args [] )
{
int oddNumber;
String output = "";
String input;
int whiteSpace;

//read in the odd number for the diamond
input = JOptionPane.showInputDialog(
"Enter any odd number between 1 and 19:");
//convert numbers from type String to type int
oddNumber = Integer.parseInt (input);




int row =1;
for ( row = 1; row <= oddNumber; row++) {

//for (whiteSpace = oddNumber; whiteSpace >= row; --whiteSpace) {
// output += " ";

int column =1;
for ( column =1; column <=oddNumber; column++) {
output += "* ";

}

output += "\n";
}
//display the results
JOptionPane.showMessageDialog (
null, output, "Results",
JOptionPane.PLAIN_MESSAGE );
System.exit (0);
}
}