The Short Notes Page: 2011

Friday, June 3, 2011

Object Interactions

•Resembles a game of pool

•Interaction is happening via objects method

Stubbing out classes

•Defining reference class as an empty class (for unimplemented classes)

Composition - Advantages

•Avoid data redundancy and associate potential loss of integrity .

•Objects are exposed to other services defined by the referred objects.

Composition
referring to objects within objects as attributes

Garbage Collection (GC)

GC is the process of releasing unused objects from the memory to free memory.

Object Reference

If we consider an object as a balloon. The reference variable is like the string holding it. Also known as the handle

Encapsulation

The term used to describe the bundling of methods and attributes in to a single unit

Class & Instantiation

Class - A blue print , which models the abstraction by grouping similar objects

Object

•An object represents an abstraction of the real-world by bundling to gather it’s state and behavior.

Abstraction Requires …

Abstraction

•Abstraction is the process of simplifying and capturing only the relevant information for the situation

Application Processes executes on Linux VM

What is Android ?

›Stack of software for mobile devices , which includes operating system, key applications and middle wear .

›Android SDK supports developing applications for Android mobiles.