What is an abstract modifier?
Learn what the abstract modifier means in Java. Discover how it defines abstract classes and methods to enforce structure and enable flexible subclassing.
What is Serialization and Deserialization?
Learn what serialization and deserialization mean in Java. Discover how objects are converted to byte streams and restored for storage, transfer, or reuse.
What is Autoboxing and Unboxing?
Understand autoboxing and unboxing in Java. Learn how primitive types and wrapper classes are automatically converted for cleaner, more flexible code
What is finally and where do we use it?
Learn what the finally block is in Java and where to use it. Ensure cleanup code runs after try-catch, regardless of exceptions or control flow changes
What is this word in java?
Discover how the this keyword works in Java. Learn how it references the current object and resolves scope conflicts within constructors and methods.
What is final in java?
Learn what the final keyword means in Java. Discover how it restricts changes to variables, methods, and classes to ensure immutability and design integrity.
What is static in java?
Learn what the static keyword means in Java. Discover how it defines class-level variables, methods, and blocks for efficient memory and shared access.
Why String is immutable in Java?
Learn why String is immutable in Java. Discover how immutability improves memory efficiency, security, thread safety, and performance in Java applications