Question

Suppose a method has an int parameter called x, and the body of the method changes x to zero. When the method is activated, what happens to the argument that corresponds to x?

Answer 1

When a method changes its parameter to zero, it only affects the local variable within the method's scope, and the argument remains unchanged outside the method.

Step-by-step explanation:

When a method with an int parameter called x changes x to zero, it only affects the local variable x within the method's scope. The argument that corresponds to x remains unchanged outside the method.

For example, if the method is called with an argument of 5, the value of x within the method will be changed to 0 but the original argument will still be 5. This is because the method operates on a copy of the argument passed to it.

To demonstrate:

public static void main(String[] args) {
int num = 5;
changeToZero(num);
System.out.println(num); // Output: 5
}

public static void changeToZero(int x) {
x = 0;
}