KAHA TECHNOLOGIES Java Developer Interview Questions and Answers

10 apti 10 DSA 10 programe 10 adavance java

Q1. Oops concepts explanation
Ans. 
Oops concepts are fundamental principles of object-oriented programming such as inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Allows objects to be treated as instances of their parent class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Abstraction: Hides the complex implemen...read more
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Q1. Entire Collections explanation
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Entire Collections in Java represent a group of objects, providing various methods for manipulation and iteration.
• Collections are used to store, retrieve, manipulate, and iterate over a group of objects in Java.

• Common classes in the Collections framework include ArrayList, LinkedList, HashMap, and TreeSet.

• Collections provide methods like add, remove, contains, and iterate using iterators or enhanced for loops.
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Q1. Explain entire Collections
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Collections in Java are frameworks that provide an architecture to store and manipulate a group of objects.
• Collections are used to store, retrieve, manipulate, and communicate aggregate data.

• They include interfaces like List, Set, Queue, and Map, along with their respective implementations like ArrayList, HashSet, PriorityQueue, and HashMap.

• Collections provide methods for sorting, searching, filtering, and iterating ov...read more
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