A language that is very close to machine code (0s and 1s)

A language that focuses on hardware details and memory management

A language that uses syntax close to human language and hides complex hardware details

A language that can only run on one specific type of computer

All Java code must be written inside a class – a class serves as the blueprint for creating objects

Java only supports classes and does not allow objects

Java uses inheritance from multiple classes

Programs are made of standalone functions without classes

Developing applications for mobile and IoT devices

Developing general-purpose applications, including desktop applications, console programs, and as the foundation for all other Java editions

Running Java on very small devices like old mobile phones

Building large enterprise web applications and servers

Creating Android mobile apps

You need to learn advanced topics first before solving real problems

Complex problems can usually be solved by mastering and correctly applying the basic concepts

Only experienced programmers who know every Java library can solve difficult problems

Basics are only useful for simple programs, not real-world applications

Java Development Kit – a software package that contains tools needed to develop, compile, and run Java programs

Java Design KitJava Deployment Kit – used only for installing Java on users’ computers

Java Development Kernel – the core part of the operating system for Java

Java Debugging Kit – only for finding errors in code

It only lets you run programs (like JRE)

It contains the compiler and tools to develop Java applications

It is only for advanced enterprise applications

It is the same as the Java Virtual Machine

Java Runtime Environment – provides the libraries and JVM to run Java programs

Java Resource Editor – used to edit Java source code

Java Runtime Engine – only compiles Java code

Java Repository Environment – stores Java libraries

A tool used to write and edit Java source code

The Java Virtual Machine – it runs Java bytecode and makes Java platform-independent

A software package that contains the compiler (javac)

A library for building web applications

A fixed value like 5 or "hello" that cannot change

A named storage location in memory that can hold a value and whose value can change during the program

A keyword used to create objects

A type of loop

2 types: global and local

3 types: local, instance, and static variables

4 types: int, float, char, and boolean

3 types: public, private, and protected

A method declaration

A class definition

A variable declaration and initialization

A loop statement

int = number 10;

variable int number = 10;

int number = 10;

number int = 10;

is_authenticated_user

calculateTotalAmount

CustomerOrderDetails

database-connection-string

camelCase

PascalCase

snake_case

kebab-case

DatabaseConnection

validateAccount

is_data_ready

get_user_info

kebab-case; it suggests the variable stores a large object.

camelCase; it suggests the variable stores a true or false value.

PascalCase; it suggests the variable stores a number.

snake_case; it suggests the variable stores a string.

Primitive and reference data types

Java

JavaScript

JavaRice

Java Coffee

There is no error — all declarations are correct

Variable names cannot start with a number — 123count is invalid

The keyword int should be written as Integer

int age = 15

double height = 1.75;

boolean isStudent = true;

char grade = 'B';