head first java chapter 2

Head First Java Chapter 2Tom Henricksen

Object oriented programming● Procedural vs Object oriented

● Object oriented models real world

● OO is easier to understand

● OO handles memory management

● Procedural is top-down

Object oriented programming● Methods vs procedures

● Objects vs records

● Classes vs modules

● Procedure calls vs messages

Object oriented programming● Super class

● Sub class

● Instance variables

● Methods

Eclipse - instance variables

Eclipse - methods

Class vs objects● Class is a blueprint

● Create many objects

Class basics● OO Program easy to extend

● All Java programs are classes

● Class can inherit variables and methods

● Objects use methods to create behavior

Be the compiler

● Exercise A

● Exercise B

Software