Difference between ArrayList and LinkedList?
Explore the difference between ArrayList and LinkedList in Java. Learn how each handles data storage, access speed, and manipulation efficiency
Difference between Array and ArrayList?
Explore the difference between Array and ArrayList in Java. Learn how fixed-size arrays compare to dynamic ArrayLists in flexibility, performance, and usage
Difference between String Builder and String Buffer?
Explore the difference between StringBuilder and StringBuffer in Java. Learn how thread safety and performance impact your choice for mutable string operations.
Difference between abstract and interface?
Explore the difference between abstract classes and interfaces in Java. Learn how each supports abstraction, inheritance, and design flexibility in OOP
Difference between final, finally, finalize?
Understand the difference between final, finally, and finalize in Java. Learn how each keyword serves unique roles in immutability, cleanup, and exception handling
What is the difference between a checked and unchecked exceptions?
Understand the difference between checked and unchecked exceptions in Java. Learn how compile-time vs runtime errors affect exception handling strategies
Why is it important to override HashCode() when you override equals()?
Learn why overriding hashCode() is essential when equals() is overridden in Java. Ensure consistent behavior in hash-based collections like HashMap and HashSet.
What is the Method Overloading?
Learn what method overloading is in Java. Discover how defining multiple methods with the same name but different parameters improves flexibility and readability
Primitives and Non-Primitives datatype in Java?
Understand the difference between primitive and non-primitive data types in Java. Learn how each handles memory, value storage, and object references.
What is call by reference and call by value?
Understand the difference between call by value and call by reference in Java. Learn how data is passed to methods and how changes affect original variables