PassByValue.java

/**
 * This program demonstrate that only a copy  of an argument
 * is passed into a method.
 */

public class PassByValue 
{
    public static void main(String[] args)
    {
        int number = 99;  //number starts with 99
        
        //Display the value in number.
        System.out.println("number is "+ number);
        
        //call changeMe, passing the value in number
        //as an argument.
        changeMe(number);
        
        //Display the value in number again. 
        System.out.println("number is "+ number);
    }
    
    /**
     * The changeMe method accepts an argument and the 
     * changes the value of the parameter.
     */
    
    public static void changeMe(int myValue)
    {
        System.out.println("I am changing the value.");
        
        //Change the myValue parameter variable to 0.
        myValue = 0;
        
        //Display the value in myValue.
        System.out.println("Now the value is "+ myValue);
    }
}