4. Suppose a class called MyClass has a subroutine with signature * Takes two in

Question

4. Suppose a class called MyClass has a subroutine with signature * Takes two integer parameters and returns the absolute value of their difference. * Oparam x integer *Oparam y integer public static abs(int x, int y) which, according to the documentation, computes and returns the absolute value of the difference between its two parameters. (a) Show a code snippet demonstrating how one would use this function to compute the absolute value of two integers (can be hard-coded). (b) Write an implementation of the function in Java. (e) Describe a few test cases to be sure that your function computes the correct value for different possible parameters.

Explanation / Answer

Ans:

a) code snippet

public static abs(int num1,int num2){
return num1-num2;

b) Java implementation(hard coded)

public class Calculator{

public static int abs(int num1,int num2){

num1=9;

num2=4;

return num1-num2;
}
}

c)Test case

import junit.framework.TestCase;

public class CalculatorTest extends TestCase {
Calculator cal=new Calculator();
  
   public CalculatorTest(String name) {
   super(name);
   }

   public void abs() {
   assertEquals(5,cal.abs(9,4));
}
}

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