Java & NetBeans exercise, can't get it to work

Question

I'm a beginner in coding and wanted to train, and so I started doing exercises that I find on the internet, I finished one and was unsatisfied because of how easy it was, and created myself a challenge.

The exercise was: you type in a variable and it tells you if it is above a certain number, in this case it's 50, but here's the thing, I didn't want to type it in, I want it to be randomly generated, but I can't find a way to solve the problem, it blocks at nextInt .

public class CheckPassFail { // saved as "CheckPassFail.java"
   public static void main(String[] args) {

      random r = new random ();
      int Low = 1;
      int High = 60;
      int mark = r.nextInt(High-Low)+ Low;
      System.out.println("The mark is " + mark);

      if (mark>50) {
         System.out.println("PASS");
      } else {
         System.out.println("Fail");
      }
   }
    private static class random {
        public random() {
        }
    }
}

Answer 1

Use Java's Random class instead of defining your own private static class.

import java.util.Random;

public class CheckPassFail { // saved as "CheckPassFail.java"
   public static void main(String[] args) {

      Random r = new Random ();
      int Low = 1;
      int High = 60;
      int mark = r.nextInt(High-Low)+ Low;
      System.out.println("The mark is " + mark);

      if (mark>50) {
         System.out.println("PASS");
      } else {
         System.out.println("Fail");
      }
   }
}