Java - Mutable example

[Travercraig]

So i'm trying to show a simple example of using mutability in java. I managed to show immutability using a String which was easy because that is defininity immutable, but I'm not sure if using a type char varaible could demonstrate mutability.

 

public static void main(String[] args)
    {
        char phrase = 'a';
        
        System.out.println("Original: " + phrase);
        
        phrase++;
        
        System.out.println("\nModified: " + phrase);            
    }

 

My thought is that the variable 'phrase' is modified to increment, and when I print it out after increment it disaplays as:  "Modified: b"

 

Is this correct to showcase mutability?

[vorticalbox]

http://www.javaranch.com/journal/2003/04/immutable.htm