CC103 REVIEWER

When was Java first implemented?

1995

What company made Java?

Sun Microsystems

What is the first name that java initially have?

Oak

What should you type in Command Prompt (cmd) to check if your system has Java already installed?

C:\Users\Your Name>java -version

TRUE OR FALSE: Identifiers Should begin with a letter (A to Z or a to z), currency character ($) or a hyphen (-)

FALSE: underscore (_) not hyphen (-)

naming convention has its first word lower case and all succeeding words have uppercase as their first letter? (ex: newMainWindow)

camelCase

ACCESS MODIFIERS

• protected

• private

• public

• default

NON-ACCESS MODIFIERS

• abstract

• final

• strictfp

PRIMITIVE VARIABLES

• byte

• char

• long

• int

• double

• short

• boolean

• float

WORA

Write Once, Run Anywhere

released as free and open-source software under the terms of the GNU General Public License (GPL)

November 13, 2006

have states and behaviors

Object

can be defined as a template/ blueprint that describes the behaviors/states that object of its type support.

Class

owned by a class

Method

For all class names the first letter should be in

Upper Case

All method names should start with

Lower Case

TRUE OR FALSE Name of the program file should exactly match the class name

TRUE

a variable that points to an object of a given class, letting you access the value of an object. An object is a compound data structure that holds values that you can manipulate.

Reference Variable

Animal Dog = new Animal ();

Reference Variable

are objects that store multiple variables of the same type.

Array

a special "class" that represents a group of constants (unchangeable variables, like final variables).

enum

start with two forward slashes (//)

Single Line Comments

start with /* and ends with */

Multiline Comments

as a contract between objects on how to communicate with each other.

Interface

initializes an object when it is created. It has the same name as its class and is syntactically like a method.

Constructor

does not accept any parameters

No Argument Constructor

Parameters are added to a constructor in the same way that they are added to a method, just declare them inside the parentheses after the constructor's name

Parameterizes Constructor

a source code representation of a fixed value. They are represented directly in the code without any computation

Literal