Basic HTML version of Foils prepared Sept 6 1998

Foil 21 Java Language -- Types of Classes - I

From Java Tutorial 98-2: Java Language and Object Oriented Techniques CPS606 Fall Semester 1999 -- Sept 7 1999. by Geoffrey C. Fox, Nancy McCracken
Possible ClassModifiers are:
  • abstract -- Contains abstract methods without implementation -- typically such abstract classes have several subclasses that define implementation of methods
  • public -- May be used by code outside the class package and (unix) file must be called ClassName.java where ClassName is unique public class in file
  • private -- this class can only be used within current file friendly(i.e. empty ClassModifier) -- class can be used only within current package
  • protected -- Only accessible to subclasses

© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Mon Sep 6 1999