Virtusa Consulting Services Fullstack Java Developer Interview Questions and Answers for Freshers

Q1. As its for experienced , most of the questions are scenario based like how will you handle if one microservice goes down ?
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Q1. JVM related Questions
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Q2. Angular features
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Q3. React Features and how to deploy
Ans. 
React is a JavaScript library for building user interfaces. Deployment can be done using various methods.
• React features include virtual DOM, component-based architecture, JSX syntax, and state management.

• Deployment can be done using tools like Heroku, Netlify, AWS, or manually by building and serving static files.

• Continuous integration and deployment (CI/CD) pipelines can be set up to automate the deployment process.

• Se...read more
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1)Driffience between Abstract class &
Interface.
-abstract class
represents property
&
behaviour of an object
whereas
interface
represents
behaviour
of an object.
2)Driffience between equal() vs ==operator.
equal() is
an object class method
whereas
equal() of string class
override
the object class equal().
3)can we use pointer's in Java.
Not explicitly but implicitly we can use pointer's in java.
Dynamic m/m refers with help of pointer's but java does not support the pointer's.
when we r creating an object in java refrence varaible of an object holds the identity that is nothing but an implicit pointer that holds an unique identity of an object.
4)How we can print object ID.
-Object ID printed with help of object class which is a service provider class having 9().
5)what is object class.
-it is a super class of all predefined & userdefined class.
6)Write a prog to get name of main thread in java.
-class A
{
psvm(String args [])
{
s.o.pln(Thread.currentThread().getName());
}
}
7)length vs length()
-length
is
data menmber
of proxy class
whereas
length() is a string class().

Q1. Explain JVM in ur own language.
Ans. 
JVM is an abstract machine that executes Java bytecode.
• JVM stands for Java Virtual Machine.

• It is responsible for interpreting and executing Java bytecode.

• JVM provides platform independence to Java programs.

• It has its own memory management system and garbage collector.

• JVM can be implemented on different operating systems.

• Examples of JVM languages include Java, Kotlin, and Scala.
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Q2. Exlplaing Multhreading.
Ans. 
Multithreading is a programming technique that allows concurrent execution of two or more threads for improved performance.
• Multithreading enables parallel execution, improving application responsiveness.

• Each thread runs independently, sharing the same memory space, which can lead to resource contention.

• Java provides built-in support for multithreading through the Thread class and Runnable interface.

• Example: A web serve...read more
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Q1. It asked basics of Java related to OOPs pillar and DSA questions
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Q2. DSA linkedlist coding summary etc
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Q1. How are you now??
Ans. 
I'm doing well today, feeling productive and motivated to tackle new challenges in my work and personal projects.
• I started my day with a refreshing morning routine, which included exercise and a healthy breakfast.

• I've been working on a challenging project that involves integrating a new API, and I'm excited about the progress I've made.

• I had a productive meeting with my team where we brainstormed ideas for improving ou...read more
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Q2. Are you good now anymore??
Ans. 
Yes, I am available and eager to contribute my skills as a Fullstack Java Developer to your team.
• I can start immediately or within a specified notice period.

• I am flexible with working hours, including remote or on-site options.

• I have experience in Java, Spring Boot, and front-end technologies like React.
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