When an value argument is passed into a method, changes to the argument value in the method do not affect the original. : Parameter « Java Source And Data Type « SCJP

1. SCJP
2. Java Source And Data Type
3. Parameter

public class MainClass {

  public static void add(int i) {
    i += 15;
    System.out.println("i in add:" + i);
  }

  public static void main() {
    int xx = 1;
    add(xx);
    System.out.println("Now xx is " + xx);

  }
}