Hi everyone,

I've been having problem with this code, I was doing a homework and I was trying to fix this code and I do all I know, however the program isn't still working and sometimes desn't compiled, If enyone can help me, I'll appreciate, thank you.

import javax.swing.*;
public class FixDebugSix3
{
public static void main(String[] args)
{
String userNumString;
int userNum, val;
final int MIN = 1;
final int MAX = 20;
userNumString = JOptionPane.showInputDialog(null,
"Enter a number between " + MIN + " and " + MAX + " inclusive");
userNum = Integer.parseInt(userNumString);
while((userNum < MIN) && (userNum > MAX))
{
userNumString = JOptionPane.showInputDialog(null,
"Number out of range" +
"\nEnter a number between " + MIN + " and " + MAX + " inclusive");
userNum = Integer.parseInt(userNumString);
}
for(val = userNum; val <= 0; --val)
{
System.out.print(val + " ");
for(int x = 0; x < 100000; --x)
for(int y = 0; y < 10000; --y);
// Adjust these numbers for faster or slower performance
}
System.out.println("Blastoff!");
}
}