Interview Questions and Answers for 'Vyom Lab' | Search Interview Question

Interview Questions and Answers for 'Vyom Lab' - 3 question(s) found - Order By Rating

Q1. What is collection framework in Java ?

Ans. The Java collections framework (JCF) is a set of classes and interfaces that implement commonly reusable collection data structures. Although referred to as a framework, it works in a manner of a library. The JCF provides both interfaces that define various collections and classes that implement them.

Sample Code for Map

Sample Code for HashMap

Sample Code for Treemap

Sample Code for set

Sample Code for hashset

Sample Code for treeset

Sample Code for list

Sample Code for arraylist

Sample Code for linkedlist

Sample Code for queue

Sample Code for priorityqueue

Sample Code for concurrenthashmap

Sample Code for vector

Sample Code for stack

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Related Questions

What is the difference between ArrayList and LinkedList ?

If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ?

Difference between HashMap and Hashtable?

Difference between TreeMap and HashMap ?

Can you provide some implementation of a Dictionary having large number of words ?

Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ?

How is Hashmap internally implemented in Java ?

What is a ConcurrentHashMap ?

Collections.sort can only be performed on ..

a. Set
b. List
c. Map
d. Any Collection implementation

Why HashTable has been deprecated ?

Q2. What is a cookie ?

Java EE

Ans. A cookie is a small piece of text stored on a user's computer by the browser for a specific domain. Commonly used for authentication, storing site preferences, and server session identification.

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What is session tracking and how do you track a user session in servlets?

what is the use of cookie and session ? and What is the difference between them ?

What are different types of cookies ?

Why using cookie to store session info is a better idea than just using session info in the request ?

http protocol is by default ... ?

How cookies helps by storing encrypted passwords ?

Is it front end code or the back end code , that drops the cookies ?

How can we drop cookies through back end code ? Does it transfer the cookie file to the client ?

What is SameSite cookie attribute ?

Frequently asked in Infosys and HCL Technologies ( Based on 2 feedback )

Q3. What are different ways of object creation in Java ?

Core Java

Ans. Using new operator - new xyzClass()

Using factory methods - xyzFactory.getInstance( )

Using newInstance( ) method - (Class.forName(xyzClass))emp.newInstance( )

By cloning an already available object - (xyzClass)obj1.clone( )

Sample Code for object initialization using clone

Sample Code for object initialization using getInstance

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Related Questions

Describe what happens when an object is created in Java ?

Does Constructor creates the object ?

Difference between new operator and Class.forName().newInstance() ?

Difference between Class#getInstance() and new operator ?

In a case where there are no instance variables what does the default constructor initialize?

How can we prevent duplicate object creation in Java?

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