Acuver Consulting Private Limited. Interview Questions and Answers

Constructor is a special method used to initialize objects in Java.

• Constructor has the same name as the class.

• It is called automatically when an object is created.

• It can be used to set default values for object attributes.

• There can be multiple constructors in a class with different parameters.

• Example: public class Car { public Car(String color) { this.color = color; } }

Program to find top ten prime numbers and more

• Create a function to check if a number is prime

• Loop through numbers and add prime numbers to an array

• Sort the array in descending order and return the top ten

• Add options for user to input range of numbers and number of primes to find

Collection framework is a set of interfaces and classes that provide a way to store and manipulate groups of objects in Java.

• Collection framework provides interfaces like List, Set, Queue, etc. for storing and manipulating groups of objects.

• It also provides classes like ArrayList, HashSet, PriorityQueue, etc. that implement these interfaces.

• Collection framework provides algorithms like sorting, searching, shuffling, et...read more

Interface in Java is a blueprint of a class that defines a set of methods without implementation.

• Interfaces are used to achieve abstraction and multiple inheritance in Java.

• All methods in an interface are public and abstract by default.

• A class can implement multiple interfaces but can only extend one class.

• Interfaces can also have default and static methods with implementation.

• Example: interface Shape { void draw(); }

• E...read more