Question

If a method that has been called assigns a new value to a parameter of a primitive type, will this have any effect on its caller?

Answer 1

If a method assigns a new value to a parameter of a primitive type, it will not have any effect on its caller.

Step-by-step explanation:

If a method that has been called assigns a new value to a parameter of a primitive type, it will not have any effect on its caller. This is because primitive types are passed by value, meaning a copy of the value is passed to the method. Any changes made to the parameter within the method are only applied to the local copy and do not affect the original value in the caller.

For example, let's say we have a method changeValue that takes an integer parameter and assigns a new value to it:

public static void changeValue(int num) {
num = 10;
}
public static void String [] args) {
int myNum = 5;
changeValue(myNum);
System.out.println(myNum); // Output: 5
}

In this example, even though the changeValue method assigns the value 10 to the num parameter, it does not affect the value of myNum in the main method, which remains 5.