Explain me this output using addOneTo?

Question

public class MyClass {
public static void main(String[ ] args) {
int x = 5;
System.out.println(addOneTo(x));
System.out.println(x);
}
static int addOneTo(int x) {
x = x + 1;
return x;
}
}

Answer 1

The x in addOneTo() is a copy of the x in main(). Since Java uses pass by value, you just pass 5 to the method where it is incremented by 1 and returned. All this time your x in main() is untouched. So in the next line 5 gets printed.

Answer 2

Ohk thnku