CSC152 2005F, Class 13: Object Basics, Continued

Admin:
* I hope to return HW1 on Monday
* HW2: Do the Class Basics lab in Espresso.  (Due Wed.)
* Agh!  It's Friday, the 13th (class)
* Eryn has candy.  Feel free to take some unless your parents told you to never take candy from strangers (since Eryn is stranger than most people)

Overview:
* Review
* Methods
* Detour: Three kinds of classes
* Standard methods
* Class methods and fields

Review: 
* Classes provide templates for creating objects
* Template classes have five (or so) parts
  * Fields - Information about the object (or that the object uses)
  * Constructors - Let you construct new objects
  * Methods - Instructions objects can use to do stuff
  * Class Fields - Associated with the class as a whole, rather than infidivudal methods
  * Class Methods
* Class construction usually starts with *design*
* Then express that design in Java
* Review continues with example (see link)
* Note: The /** ... */-style comments make it easier to automatically generate documentation:
	(alpha) Add the following alias to your .bashrc
	alias jdoc='/opt/jdk1.5.0/bin/javadoc -version -author -tag pre:m:"Preconditions" -tag post:m:"Postconditions"'
	(a) Create a directory for your documentation, such as /home/username/public_html/CSC152/Documentation
	(b) cd to that directory
	(c) type "jdoc package1.name package2.name ..."
	(d) Check permissions!
	(e) Open the directory in a Web browser (e.g., http://www.cs.grinnell.edu/~username/CSC152/Documentation/)

/Methods/

* Form
	PROTECTION RETURN-TYPE NAME(PARAMETERS)
	{
		INSTRUCITIONS
	} // NAME(PARAMETER-TYPES)

* Legal "instructions"
  * Variable declarations of the form
  	TYPE NAME;
  * Assignment statements of the form
  	NAME = EXP;
  * Method calls of the form
  	OBJECT.METHOD(PARAMS)
  * Control statements, which you learn about next week
  * Return statements, of the form
  	return EXP;