Browse the complete Core Java tutorial series with example-driven, step-by-step guides.
Learn classes and objects in Java with syntax, fields, methods, and constructors. Includes real-world examples, best practices, and interview questions.
Learn Java constructors, default and parameterized constructors, and constructor overloading with syntax, examples, best practices, and interview questions.
Learn the this keyword in Java for referring to the current object and implementing constructor chaining with syntax, examples, best practices, and interview questions.
Learn the static keyword in Java with variables, methods, and blocks. Understand their lifecycle, use cases, best practices, and interview questions with examples.
Learn Java access modifiers - public, private, protected, and default. Understand their usage, scope, best practices, and interview questions with examples
Learn encapsulation in Java with getters, setters, and data hiding. Understand syntax, best practices, real-world examples, and interview questions with code.
Learn inheritance in Java with extends keyword and method overriding. Understand syntax, use cases, best practices, and interview questions with real-world examples.
Learn the super keyword in Java for calling parent constructors and methods. Understand syntax, use cases, best practices, and interview questions with examples
Learn polymorphism in Java, including compile-time and runtime polymorphism, method overloading vs overriding, best practices, and interview questions with examples
Learn abstract classes and methods in Java with examples. Understand when and why to use them, best practices, and interview questions for real-world scenarios
Learn Java interfaces with default methods, static methods, and multiple inheritance. Includes syntax, real-world examples, best practices, and interview questions
Learn the final keyword in Java for variables, methods, and classes. Understand syntax, use cases, best practices, performance, and interview questions with examples
Learn Java Object class methods including equals, hashCode, toString, clone, and finalize. Includes syntax, use cases, best practices, and interview questions.
Learn how Java Garbage Collection works, the role of finalize(), types of collectors, performance tips, and best practices for memory management in Java
Learn the difference between Java heap and stack memory, how variables, objects, and method calls are stored, performance tips, and best practices.
Learn the difference between shallow and deep copy in Java, how to clone objects properly, avoid pitfalls, and implement efficient copying strategies.
Learn everything about Java Wrapper Classes like Integer, Double, and Boolean. Understand autoboxing, unboxing, performance tips, and best practices.
Learn how Java handles autoboxing and unboxing to convert between primitives and wrapper objects automatically, with best practices and performance tips.
Learn Java enums in depth: basics, enums with fields and methods, real-world use cases, performance tips, best practices, and common mistakes to avoid
Understand the difference between enums and constants in Java, when to use each, performance impacts, and best practices for clean, maintainable code
Learn how to create custom checked and unchecked exceptions in Java, when to use them, common pitfalls, best practices, and real-world use cases.
Learn how exception propagation works in Java, how exceptions bubble up the call stack, best practices, common mistakes, and real-world use cases.
Learn coupling and cohesion in Java, their importance in clean code, real-world examples, best practices, anti-patterns, and how they impact software design.
Learn the difference between composition and inheritance in Java, their use cases, best practices, and why composition is often preferred for flexible design.
