Akal Information Systems Java Developer Interview Questions and Answers

Oop concept, Multithread, String

Q1. SAP related questions
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Q1. High level Managerial round
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Q1. How many ways to create the object in java
Ans. 
There are multiple ways to create objects in Java.
• Using the 'new' keyword

• Using object cloning

• Using object deserialization

• Using reflection

• Using factory methods

• Using dependency injection frameworks
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Q2. What is the use of final key word in java
Ans. 
The final keyword in Java is used to restrict the user from modifying the value of a variable, the definition of a method, or the inheritance of a class.
• When applied to a variable, the final keyword makes it a constant that cannot be changed.

• When applied to a method, the final keyword prevents it from being overridden by subclasses.

• When applied to a class, the final keyword prevents it from being extended by other clas...read more
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Q1. How much salary you expected
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Q2. What is the last company provided salary to you
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Group discussion was the first round on avg there were 15 people in a group discussion at last everyone was given a minute to speak

Q1. Tell me about yourself?
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Q2. Where do you see yourself in five years?
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Q3. Tell me about your family?
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Q4. Do you plan on Higher education?
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Q1. Questions on OOPs concept
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Q2. Sort the array by parity
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Q3. Write SQL queries
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Q4. Who wrote the book discovery of the nation
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Q5. What is the official language of kashmir
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Q6. Which city is called city of lakes
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Q1. Find the length of the longest word in the length
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Q2. Push the zeroes in the arrays to the end
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Q3. When was python launched
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Q4. What is name of ai from meta/google/amazon
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Q5. What do you do in your free time
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Q6. Tell me your pros and cons
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Q1. Tell us about your experience.
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Q2. In english, give me a feedback you received lately.
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Q1. Brief explanation of SOLID principles
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Q2. Ref vs out arguments
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Q1. What is React, and what are its lifecycle methods?
Ans. 
React is a JavaScript library for building user interfaces.
• React is used for creating interactive UI components.

• It uses a virtual DOM for efficient rendering.

• React lifecycle methods include componentDidMount, componentDidUpdate, and componentWillUnmount.

• These methods allow developers to perform actions at specific points in a component's lifecycle.
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Q2. What is the virtual DOM and how does reconciliation work in it?
Ans. 
Virtual DOM is a lightweight copy of the actual DOM used for efficient updates. Reconciliation is the process of updating the actual DOM based on changes in the virtual DOM.
• Virtual DOM is a lightweight copy of the actual DOM kept in memory.

• When changes are made to the UI, they are first reflected in the virtual DOM.

• Reconciliation is the process of comparing the virtual DOM with the actual DOM and updating only the nece...read more
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Q1. Oops, Dot net ,MVC
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Q1. Project based backend and frontend
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Q2. How to connect to backend
Ans. 
To connect to the backend, you can use APIs, database connections, or web services.
• Use APIs to send and receive data between the frontend and backend

• Establish database connections to retrieve and store data

• Utilize web services for communication between different systems
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