Composition is a stronger form of aggregation, where the contained object cannot exist without the container, implying ownership and a lifecycle dependency.

Aggregation is a special form of association where one object “has-a” relationship with another, but the contained object can exist independently.

In Java, association refers to a general relationship between two objects, where one object uses or interacts with another, without owning it.

In Java, the ListIterator interface is used to iterate over elements in a List collection, such as an ArrayList. Unlike the regular Iterator, a ListIteratorContinue readingJava – List-Iterator – MCQ

In Java, the ListIterator interface is used to iterate over elements in a List collection, such as an ArrayList. Unlike the regular Iterator, a ListIteratorContinue readingJava – Array list-arraylist iterator – MCQ

Enum is a special data type that defines a set of constants, providing type safety and allowing for more readable code, especially when dealing withContinue readingJava – Enum – MCQ

In Java, access modifiers define the visibility of classes, methods, and variables. They include public, protected, private, and the default (package-private) modifier.

Scope in Java refers to the region of the program where a variable, method, or class is accessible. It determines the visibility and lifetime ofContinue readingJava – Scope – MCQ

In Java, packages are used to group related classes and interfaces, providing a modular structure to organize code and avoid naming conflicts. A package canContinue readingJava – Packages – MCQ

In Java, the final keyword is used to define constants, prevent method overriding, and prevent inheritance. When applied to a variable, it makes the valueContinue readingJava – Final – MCQ