Why is a negative percent not giving me the correct result?

[MXA92]

When I input a negative number, it gives me an "E" when it should ask the user to enter a valid percentage, and I don't understand why :\
It works well with any positive integer :\....

import java.util.*;

public class Grade 
{
    public static void main (String[]args)
    {
        Scanner kybd = new Scanner(System.in);
        
        System.out.print("Please input a percentage: ");
        int PERCENT = kybd.nextInt();
        
        //output grade based on percent
            if (PERCENT >= 70)
            {
                System.out.println("A");
            }
            else if (PERCENT >= 60)
            {
                System.out.println("B");
            }
            else if (PERCENT >= 50)
            {
                System.out.println("C");
            }
            else if (PERCENT >= 40)
            {
                System.out.println("D");
            }
            else if (PERCENT >= 0)
            {
                System.out.println("E");
            }
            else if (PERCENT < 0)
            {
                System.out.println("Please enter a valid percentage");
            } 
    }
}

[SFNYC]

It works for me:
Oh, and don't capitalize your variable names. By convention, capitalized variable names are reserved for constants.

$ cat Grade.java
    import java.util.*;

    public class Grade
    {
        public static void main (String[]args)
        {
            Scanner kybd = new Scanner(System.in);

            System.out.print("Please input a percentage: ");
            int PERCENT = kybd.nextInt();

            //output grade based on percent
                if (PERCENT >= 70)
                {
                    System.out.println("A");
                }
                else if (PERCENT >= 60)
                {
                    System.out.println("B");
                }
                else if (PERCENT >= 50)
                {
                    System.out.println("C");
                }
                else if (PERCENT >= 40)
                {
                    System.out.println("D");
                }
                else if (PERCENT >= 0)
                {
                    System.out.println("E");
                }
                else if (PERCENT < 0)
                {
                    System.out.println("Please enter a valid percentage");
                }
        }
    }
$ javac Grade.java
$ java Grade
Please input a percentage: -05
Please enter a valid percentage

[MXA92]

Figured it out now, please do lock and/or delete this.

EDIT: Sorry, didn't realise anyone had replied. It seems it was just my NetBeans messing up. I restarted it and it worked fine :)
EDIT2: And thank you for the info, +rep ^_^