Java Reference
In-Depth Information
DAY 8:
During the first week, you learned about the core elements of the Java
language: objects; classes; interfaces; and the keywords, statements,
expressions, and operators that they contain.
For the second week, the focus shifts from the classes you create to the
ones that have been created for you: the Java class library, a set of stan-
dard packages from Sun Microsystems with more than 1,000 classes you
can use in your own Java programs.
Today, you start with classes that represent data.
