Question

private int someMethod(int a, Object b, String c, char d)

A. a is pass by reference, b is pass by value, c is pass by reference, and d is pass by value
B. a is pass by value, b is pass by reference, c is pass by reference, and d is pass by value
C. a is pass by reference, b is pass by reference, c is pass by reference, and d is pass by
reference
D. a is pass by reference, b is pass by value, c is pass by value, and d is pass by value

Answer 1

What does it mean when something is passed by value or by reference?

If data is stored directly in memory without a class type, would it make sense to pass that as a reference or a value? And if the data has a class type?

If you don't already know, int and char are fundamental types in most languages, so they are stored directly in memory, without a class structure associated with them. "Object" is a user-specified class, and String is a special class defined in a standard library.

Can you now answer your question?

Answer 2

Any none primitive data type (including strings) is a pass by value. Other wise it is pass by reference.