Wipro Fullstack Java Developer Interview Questions and Answers

Q1. SQL - a table with emp-id, emp-name, manager-id, Need to find the manger name for each emplyee.
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Q2. FizzBuzz - if number is divisible by 3 print "fizz", if by 5 print "buzz", if by both "fizzbuzz"
Ans. 
A simple program to print 'fizz' for multiples of 3, 'buzz' for multiples of 5, and 'fizzbuzz' for multiples of both.
• Iterate through numbers from 1 to n.

• Use modulo operator to check divisibility by 3 and 5.

• Print 'fizz', 'buzz', or 'fizzbuzz' accordingly.
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Q3. Is it necessary for classes implementing an interface to implement interface methods?
Ans. 
Yes, classes implementing an interface must implement interface methods.
• Classes implementing an interface must provide concrete implementations for all methods declared in the interface.

• Failure to implement all interface methods will result in a compilation error.

• Interfaces are used to define a contract that implementing classes must adhere to.
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Q4. Spring basics - annotations
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Q1. Spring boot basics
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Q1. Talked about my previous companies and salary. Before they conduct the interview I had told them my expectation, while negotiation they denied for providing that and were offering just 10% hike over my cur...read more
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Q1. Java common question on hashmap, stream api
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Q1. Q1 - tell me about yourself After my introduction he directly jump into coding and asked me simple array manipulation question. Q3 - balanced string - you have a String = "()()()" or "(()" or "(()). The ou...read more
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Q1. The interviewers don't know how to speak English and are worst in communication. Q1 - Convert int a=123 to string. I told him you can do it with in built method but he asked me to do without it. I told h...read more
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General aptitude, logical reasoning, english and Pseudocodes

Q1. Self introduction Project- details, role Programming- Variables, recursion, Features,Arrays, strings, write prime number program.
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Q1. A senior in my current team was asking questions. He was helping to complete my answers. Be prepared with oops, collection, thread concepts, spring, hibernate basics thoroughly.
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