import java.util.Scanner;

/** 
 * This class illustrates that a parameter variable gets the initial
 * value from the argument passed in, however, changes made in the
 * method DO NOT AFFECT the original variable passed in.
 */
public class PassByValue {
  /**
   * 
   */
  public static void main(String[] args)   {
    System.out.println("Hello from main (before method call)");
    Scanner sc = new Scanner(System.in);
    int mynum = sc.nextInt();
    displayInt(mynum);
    System.out.println("In main, returned from method displayInt."
                      + " mynum=" + mynum);
  } 
  /**
   * displayInt displays the value of the parameter to the screen
   * @param num the number to display to the screen
   */
  public static void displayInt(int num)   {
    System.out.println(num);
    num++;
    System.out.println("in method, num = " + num);
  }
}