What is Core Java?

Core Java refers to the fundamental aspects of the Java programming language and its basic libraries. It forms the base for all other editions of Java (like Java Enterprise Edition (Java EE) and Java Micro Edition (Java ME)) and provides the foundation necessary to build Java applications. Core Java is essentially the standard edition of Java (Java SE) and focuses on general-purpose API. Here's a breakdown of what Core Java typically includes:

Core Java Components
Language Fundamentals:

Basic syntax
Data types, variables, and arrays
Operators and control statements
Object-Oriented Programming (OOP):

Classes and Objects
Inheritance, polymorphism, abstraction, and encapsulation
Interfaces and Abstract Classes
Exception Handling:

Try, catch, finally blocks
Creating custom exceptions
The throw and throws keywords
Java Collections Framework:

List, Set, Map, Queue interfaces and their implementations (ArrayList, HashSet, HashMap, etc.)
Iterators and the enhanced for loop
Utility classes like Collections and Arrays
Streams and File I/O:

Byte and character streams (InputStream, OutputStream, Reader, Writer)
Buffered streams
Serialization
File handling using the java.nio package
Multithreading and Concurrency:

Threads and Runnable interface
Synchronization
Concurrency utilities (Executors, Concurrent Collections, Atomic variables)
Networking:

Sockets and server sockets
URL and HttpURLConnection classes
Java Utilities Package:

Date and time API (java.time)
Utility classes (Random, Scanner, etc.)
Java Generics:

Type parameters
Generic methods and classes
Bounded types
https://www.sevenmentor.com/java-course-in-nagpur