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Introduction to Java – Syntax, Variables, and Data Types:

Introduction to Java – Syntax, Variables, and Data Types

Java Syntax

Follows a specific set of rules and convention

Combination of keywords, identifiers, literals, operators, and separators

Case-sensitive
Variables in Java

Named locations used to store data

Declared with a data type, followed by the variable name, and an optional initial value

Examples:

Int myNumber = 10;

String myText = “Hello, World!”;

Data Types in Java

Primitive data types:

Boolean

Char

Byte
Short

Int

Long

Float
Double

Reference data types:

Class

Interface

, Array

Other Java Topics (not covered)

Object-Oriented Programming in Java – Classes and Objects

Java Methods – Logic and Control Flow

Java Loops and Conditional Statements – For, While, If-Else

Java APIs and External Libraries – Integrating External Code

Java Memory Management and Object Lifetime

Java Exception Handling – Try-Catch Blocks




Object-Oriented Programming in Java – Classes and Objects:

Object-Oriented Programming in Java – Classes and Objects

Classes

A class is a blueprint for creating objects in Java.

It defines a set of properties (variables) and methods (functions) that the objects created
from the class will have.

Objects

An object is an instance of a class.
It has its own state, which is determined by the values assigned to the properties
defined in the class.

Creating Objects

To create an object, you use the new keyword followed by the name of the class and a
set of parentheses.
You can then assign the object to a variable for later use.

Example

// Define the class

Public class Car {

// Properties