5-7 PassString

Post date: Mar 29, 2014 5:02:55 PM

//This program demonstrates that String arguments cannot be changed.

package passstring;

public class PassString 

{

        public static void main(String[] args) 

        {

            // Create a String object containing "Shakespeare".

            // The name variable references the object.

            String name = "Shakespeare";

            // Display the String referenced by the name variable.

            System.out.println("In main, the name is " + name);

            // Call the changeName method, passing the contents of the name variable as an argument.

            changeName(name);

            // Display the String referenced by the name variable.

            System.out.println("Back in main, the name is " + name);

        }

        //The changeName method accepts a String as its argument and assigns the str parameter to a new String.

        public static void changeName(String str)

        {

            // Create a String object containing "Dickens".

            // Assign its address to the str parameter variable.

            str = "Dickens";

            // Display the String referenced by str.

            System.out.println("In changeName, the name is now " + str);

        }

}