NTT Data Information Processing Services Fullstack Java Developer Interview Questions and Answers

Just some basic questions.

Total 6 questions. 4 basic and 2 advanced.

Q1. Write a program for Fibonacci?
Ans. 
Program to generate Fibonacci series using Java
• Use a loop to generate Fibonacci series

• Start with 0 and 1 as the first two numbers

• Add the previous two numbers to get the next number

• Repeat the process until the desired number of terms
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Q2. Write a code for inheritance ?
Ans. 
Inheritance in Java allows a class to inherit properties and behaviors from another class.
• Create a parent class with common properties and methods

• Create a child class that extends the parent class

• Child class can access parent class properties and methods
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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??
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Q2. Are you good now anymore??
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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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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.
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Coding is little difficult so please go through logic

Q1. The interview is based on the skills you mentioned in resume
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Q2. What is the use of Java
Ans. 
Java is a versatile programming language used for developing a wide range of applications, from web and mobile apps to enterprise systems.
• Java is used for developing web applications, mobile applications, desktop applications, and enterprise systems.

• It is commonly used in backend development for server-side programming.

• Java is also used in game development, scientific applications, and big data processing.

• It is platfor...read more
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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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Probability, Logical Reasoning, etc.

4 Basic coding questions
You can choose any language you want to code from.
Questions like palindrome and string reverse were asked.

Q1. Asked about the project I had done.
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Q2. Comfortable with relocation
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Q1. Type of redux and it's components
Ans. 
Redux is a predictable state container for JavaScript apps. It helps manage the state of an application in a single immutable state tree.
• Redux consists of three main components: store, actions, and reducers.

• Store: holds the state of the application.

• Actions: describe what happened in the application.

• Reducers: specify how the state changes in response to actions.

• Example: store.dispatch(action) is used to dispatch an acti
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Q2. Redux middleware
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