The Core Java Programming & Object-Oriented Concepts Course by Sajitha Krishnan is a structured online training program designed for students who want to build strong programming fundamentals using Java. This course is especially suitable for BTech Computer Science (CSE) students, beginners in programming, and learners who want to strengthen their understanding of object-oriented programming and application development concepts.

Java is one of the most widely used programming languages in academic curricula and the software industry. This course focuses on both theoretical understanding and practical coding skills, enabling learners to understand how Java programs are designed, compiled, and executed. Students are introduced to Java runtime concepts such as JVM, bytecode execution, and memory handling, helping them develop a deeper understanding of how Java applications work internally.

The curriculum gradually progresses from Java basics to advanced topics such as exception handling, multithreading, and graphical user interface development using Swing. Learners gain exposure to real-world programming structures, coding logic, and application development workflows, preparing them for academic projects, technical interviews, and future software development roles.

This online course offers flexibility and structured learning support, making it suitable for students who want to improve both academic performance and technical skill development.

What Students Will Learn

Unit 1:  Introduction:

Introduction to Java Language and Runtime Environment, JVM, Bytecode, Object-oriented concepts- Abstraction, Encapsulation, Inheritance and Polymorphism, Basic program syntax, Hello world, Data types, Variables, Operators, Control statements and functions-value types and reference types, The concept of references   

 Unit 2:  Classes, Objects, and Constructors:

Objects in Java, Class file, Constructor functions, Class members and method, Class Instance variables, The Object class, Garbage collector, Method overloading, Constructors, Constructor overloading. 

Inheritance and Packages: Basics of Inheritance, Types of Inheritance, Super keyword, Final keyword, Overriding of methods, Applying and implementing interfaces, Packages-create, access and importing packages 

Unit 3:  Exception handling and Threading

Introduction to exception handling, Hierarchy of exception, Usage of try, catch, throw, throws and finally, Built-in and user defined exceptions, Threads, Creating Threads, Thread life cycle, Concept of multithreading 

Unit 4:  GUI programming with Swing:

Applets-Applet class, Delegation event model-events, event sources, event listeners, event classes, mouse and keyboard events, JLabel, JText, JButton, JList, JCombo box. 

Teaching Method

This is a fully online instructor-led training program with a strong focus on conceptual clarity and practical programming exercises. Sajitha Krishnan follows a structured teaching methodology that helps students understand Java programming step by step.

Teaching highlights include:

• Live coding demonstrations

• Concept explanation with examples

• Practice exercises and assignments

• Academic-oriented learning support

• Doubt-clearing sessions

Students are guided through program logic building, debugging techniques, and best coding practices.

Why Learn With Sajitha Krishnan

Sajitha Krishnan focuses on helping students build a strong programming foundation and understand object-oriented programming concepts clearly. The teaching approach emphasizes logical thinking, structured coding practices, and academic alignment, making it suitable for engineering students and beginners.

The course is designed to support both academic success and technical skill development.

Benefits & Learning Outcomes

After completing this course, learners will be able to:

• Write structured Java programs confidently

• Understand OOP concepts and apply them practically

• Handle exceptions and multithreaded programs

• Build basic graphical user interfaces using Swing

• Improve problem-solving and logical thinking skills

• Prepare for academic exams and technical interviews

This course provides a strong foundation for advanced Java technologies and future software development learning paths.