I was presented with this problem Write a class TripleChecker with a static meth

Question

I was presented with this problem

Write a class TripleChecker with a static method isTriple which

• Takes a single integer, and

• Returns true when the integer argument is exactly divisible by 3.

When I try to do this using this code, I get errors on lines 6 and 8. 6 says (cannot convert from int to boolean). What is my issue?

public class TripleChecker {

   public static boolean isTriple(int num) {

       // if number is divisible by three, "true" will be returned

       int remainder = num % 3;

       if (remainder = 0) { isTriple(num) == true; }

       // if number is not divisible by three, "false" will be returned

       else { isTriple(num) = false; }

       return isTriple(num);

       }

   public static void main(String[] args) {

       System.out.println("Begin testing");

       System.out.println("Testing number: -300");

       System.out.println("Expected output: true");

       System.out.println("Actual output: " + isTriple(-300));

       System.out.println("Testing number: -26");

       System.out.println("Expected output: false");

       System.out.println("Actual output: " + isTriple(-26));

       System.out.println("Testing number: 0");

       System.out.println("Expected output: false");

       System.out.println("Actual output: " + isTriple(0));

       System.out.println("Testing number: 3");

       System.out.println("Expected output: true");

       System.out.println("Actual output: " + isTriple(3));

       System.out.println("Testing number: 25");

       System.out.println("Expected output: false");

       System.out.println("Actual output: " + isTriple(25));

       System.out.println("Testing number: 333");

       System.out.println("Expected output: true");

       System.out.println("Actual output: " + isTriple(333));

       System.out.println("End testing");

   }

}

Explanation / Answer

public class TripleChecker { public static boolean isTriple(int num) { if(num == 0) return false; return num % 3 == 0; } public static void main(String[] args) { System.out.println("Begin testing"); System.out.println("Testing number: -300"); System.out.println("Expected output: true"); System.out.println("Actual output: " + isTriple(-300)); System.out.println("Testing number: -26"); System.out.println("Expected output: false"); System.out.println("Actual output: " + isTriple(-26)); System.out.println("Testing number: 0"); System.out.println("Expected output: false"); System.out.println("Actual output: " + isTriple(0)); System.out.println("Testing number: 3"); System.out.println("Expected output: true"); System.out.println("Actual output: " + isTriple(3)); System.out.println("Testing number: 25"); System.out.println("Expected output: false"); System.out.println("Actual output: " + isTriple(25)); System.out.println("Testing number: 333"); System.out.println("Expected output: true"); System.out.println("Actual output: " + isTriple(333)); System.out.println("End testing"); } }

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