Data

Variables

What are they?

Java distinguishes between 2 types of data:

What are they?

Variables

To be able to use variables they need to be _____

Variables

The first thing to happen in a program is usually _____ variables

Variables

Choosing a suitable name

The names given to a variable are known as an _____

Variables

Identifiers

- Cannot START with a _____
- Cannot use _____ or spaces
- Should start with _____ _____ names

Primitive Data Types

How many are there?

Primitive Data Types

Every _____ must have a type associated with it

Primitive Data Types

What are the 8?

Primitive Data Types

byte

Minimum value : _____
Max value : _____
Default Value : _____
It is used to _____ _____ in large arrays as they are 4 times smaller than ints

Primitive Data Types

short

Number of bits : _____
Default Value : _____
It is used to _____ _____ in large arrays as they are _____ times smaller than ints

Primitive Data Types

int

Number of bits : _____
Default Value : _____
Generally used as the default data type for integral values unless there is a concern about _____

Primitive Data Types

long

Number of bits : _____
Default Value : _____
Used when a wider range than an _____ is needed

Primitive Data Types

float

Number of bits : _____
Default Value : _____
Used to save memory in large arrays of _____ _____ numbers
It is never used for _____ values such as currency

Primitive Data Types

double

Number of bits : _____
Default Value : _____
Used as the default data type for _____ values
It is never used for _____ values such as currency

Primitive Data Types

boolean

Default Value : _____
Used as the default data type to track _____ or _____

Primitive Data Types

char

Number of bits : _____
Used to store _____ character

Reference Data Types

Reference variables are created using defined _____ of the classes

Reference Data Types

They are used to access _____

Reference Data Types

They include _____ and _____ _____

Variables

Declare an int called number

Variables

Initialize an int called number with a value of 4

Variables

What symbol is the assignment operator when assigning values to variables?

Variables

What is an expression?

Relational Operators

What is a condition?

Relational Operators

What does an if statement allow a program to do?

Under the Bonnet

JVM

What does it stand for?

Under the Bonnet

JVM

Is it platform independent?

Under the Bonnet

One major advantage and characteristic of Java is _____

Portability

How is it achieved?

What is the intermediary between the Java language and the OS?

Java Bytecode

How is it executed?

Compiling and Running

What is the file extension for a Java file?

What is used to turn the source code into bytecode?

After Javac finishes compiling the source code then it creates a new class with the extension _____

Which file extension does the JVM run?