Whirldata Inc. Java Developer Interview Questions and Answers

Aptitude it is a type of test in which there are many questions like resigning, technical,blood relation.etc

In group discussion we have provided some topic and told discuss about that topic and tell advantages and dis advance.

Q1. What is final in java
Ans. 
final keyword in Java is used to restrict the user from changing the value of a variable, making it a constant.
• Final keyword can be applied to variables, methods, and classes

• Final variables cannot be reassigned once initialized

• Final methods cannot be overridden in subclasses

• Final classes cannot be extended
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Q2. What is static In java?
Ans. 
Static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.
• Static variables are shared among all instances of a class.

• Static methods can be called without creating an object of the class.

• Static blocks are used to initialize static variables.

• Example: public static int count = 0;
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Q3. The static it is a type of method called static method in which when we declared a method as static then it can't be inherited another class
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2 coding question were asked

Q1. Question were basic related to html, css, java
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Q2. Basic OOPS question and how to create table in html
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Q1. Where you find yourself in 5 years
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Q2. Basic friendly talk regarding your life
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Q1. Are you okay with the salary?
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Q1. Intro about Experience
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Q2. Knowledge on tools
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Giva a Full stack project. based on MERN AND MEAN stack

Q1. Dsa , were easy to medium
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Q2. Some backend and azure related questions
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Q1. Strecture of sql statement
Ans. 
SQL statements are used to interact with databases by performing operations like querying, updating, and deleting data.
• SQL statements are made up of keywords like SELECT, INSERT, UPDATE, DELETE, etc.

• They are structured in a specific order, with clauses like WHERE, ORDER BY, GROUP BY, etc.

• Tables are referenced using their names, and conditions are specified to filter data.

• Joins can be used to combine data from multiple
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Very basic apti test. focus on speed

Q1. Again should focus on logics and how good you can present your ideas
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Q2. OOPS concepts will also ask to write code
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Q3. OS concepts will also be there
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Basic coding questions (non-DSA) - Basic questions to reverse a string, check if string is palindrome, etc. If you have basic coding skills, you'll easily clear this round

Q1. Interview with CEO - Questions were asked based on technical skills - basic questions related to Database, backend technologies.
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Q2. Behavioral questions will be asked
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