Core Java Complete Notes By Durga Sir May 2026

Java’s multithreading capability is what makes it enterprise-ready. Durga Sir’s notes provide a rare, in-depth look at race conditions, locks, and inter-thread communication.

Java is an object-oriented programming language that is widely used for developing a variety of applications, including web applications, mobile apps, games, and more. Created by Sun Microsystems (now owned by Oracle Corporation), Java is known for its platform independence, allowing Java programs to run on any device that has a Java Virtual Machine (JVM) installed.

Durga Sir stresses that Arrays are objects in Java. core java complete notes by durga sir

This is the heart of Durga Sir’s notes.

1. Class and Object

2. Encapsulation

3. Inheritance

4. Polymorphism

5. Abstraction

While traditional "Core Java" stopped at Java 6, Durga Sir’s updated notes include critical Java 8 changes.