Final answer:
The question involves creating a Java method that checks if a number is 1 or 2 more than a multiple of 20. It makes use of the modulus operator to find the remainder after division by 20, returning true if the remainder is 1 or 2.
Step-by-step explanation:
The subject of Computers and Technology, specifically within the area of programming. The task is to implement a method in Java that returns true if a non-negative number is either 1 or 2 more than a multiple of 20. The provided code utilizes the modulus operator (%) to determine if the remainder when dividing the number by 20 is either 1 or 2, which would satisfy the condition.
This operator is essential in mathematical operations within programming that involve division when one needs to find the remainder. If the remainder of n % 20 is 1 or 2, meaning n is either 21, 22, 41, 42, and so on, it confirms that n is 1 or 2 more than a multiple of 20. By using the logical OR operator (||), the code checks both conditions in one statement, returning true if either condition is met, and false otherwise. It's a concise way to implement this functionality using fundamental programming constructs.