Versions Used in This Book
Writing a book on Java in the age of Internet time is hard梩he
sand on which we're standing is constantly shifting.
But we've drawn a line in that sand, and the line
we've drawn is at the Java 2 Standard Edition (J2SE)
Version 5.0 from Sun Microsystems. This software was previously known
as J2SE Version 1.5.
It's likely that versions of Java that postdate this
version will contain some changes to the threading system not
discussed in this edition of the book. We will also point out the
differences between J2SE 5.0 and previous versions of Java as we go
so that developers using earlier releases of Java will also be able
to use this book.
Most of the new threading features in J2SE 5.0 are available (with
different APIs) from third-parties for earlier versions of Java
(including classes we developed in earlier editions of this book).
Therefore, even if you're not using J2SE 5.0,
you'll get full benefit from the topics covered in
this book.
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