University degree in math required to continue learning Java ? Because this is the first lesson in Multithreading, and I have no idea what these mean.

package com.codegym.task.task21.task2103;
/*
Simplify. Don't rename variables. Don't leave comments.
Requirements:
1. The calculate method must be static.
2. The calculate method should return a boolean.
3. The calculate method must have four boolean parameters.
4. The calculate method should be as simple as possible (without changing the behavior).
*/
public class Solution {
public static boolean calculate(boolean a, boolean b, boolean c, boolean d) {
return (!b && c);
}
public static void main(String[] args) {
}
}