I prefer that all of my Java classes provide for immutable objects unless there is a compelling need for them to be mutable. I’m not the only one who feels this way. In Effective Java (Item 15 ...

In the code example below, you see the immutable String and the mutable StringBuilder class. Each is being passed as a parameter to a method. Knowing that Java only passes by value, what do you ...

and a mutable class can be a subclass of an immutable class. See class. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.