In primitive Pass by value In objects pass by reference as as value

Iin java we can use both methods

"Passing by value" means that you pass the actual value of the variable into the function. So, in your example, it would pass the value 9. "Passing by reference" means that you pass the variable itself into the function (not just the value). So, in your example, it would pass an integer object with the value .

pass by value

C++, Java is pass by reference. C is pass by value.