[Edu-sig] Properties use case

[Christian Mascher]

Scott David Daniels wrote:

> copying to a minimum.  With immutables, you needn't do any of the
> bookkeeping.  It is not that you have gone terribly wrong; it is that
> you have opened the lid on a large class of avoidable problems.  If you
> look at Java's strings (as I remember -- it has been forever since I
> studied Java at all), you will find they are mutable.  You also find
> that Java code copies strings a _lot_, just to be safe against lower-
> level mutation.

Incidentally, Java's strings are immutable, too. Quote from "Head First 
Java" (p. 589):

"For security purposes, and for the sake of conserving memory 		... 
Strings in Java are immutable."

Christian