Wissen Technology Java Software Developer Interview Questions and Answers

Technology advantage or not

All aptitude topics,logical reasoning

Q1. Oops,2 coding questions
Add your answer
Q2. Palindrome,even number
Add your answer

Q1. What do you know
Add your answer
Q2. Do you have any questions
Add your answer

Q1. Looker developer
Add your answer
Q2. Sql server
Add your answer

Q1. Looker developer
Add your answer
Q2. Sql server
Add your answer

Q1. Micro service disadvantage
Ans. 
Microservices can introduce complexity, communication overhead, and potential performance issues.
• Increased complexity due to managing multiple services

• Communication overhead between services

• Potential performance issues due to network latency

• Difficulty in maintaining consistency across services
Answered by AI
Add your answer
Q2. @functionalinterface can we extend or not, map & flatmap
Ans. 
No, @FunctionalInterface cannot be extended. Map and flatMap are default methods in the interface and cannot be overridden.
• No, @FunctionalInterface cannot be extended as it is a single abstract method interface.

• Map and flatMap are default methods in the interface and cannot be overridden.

• Example: public interface MyInterface { void myMethod(); default void myDefaultMethod() { // implementation } }
Answered by AI
Add your answer

Hackerrank coding round.

Q1. Questions and coding testing your OOPS knowledge
Add your answer

Q1. Every tech stack, SQL, OOPS, JAVA
Add your answer

Q1. Junit vs Mockito Spring boot related questions AWS related questions Java Related Questions Coding on find the smallest second number
Add your answer

Basic aptitude questions and 1 coding question also question on MySQL

In gd they ask on e-learning is advantage or disadvantage