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3,993 fullstack developer interview questions shared by candidates

Core Java- use of streams in java What happens if I try to access a variable(which is declared outside) inside a .forEach block? Is it possible? Yes/no -Why? Hashmap vs concurrent hashmap and it’s workings. How many threads can access a concurrent hashmap at a time? Is it possible to modify a array-list while iterating it? Is there a way to do it? Some coding questions on overriding and exception handling concepts
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Java Fullstack/Microservices Developer

Interviewed at Capgemini

4.2★
Jan 14, 2021

Core Java- use of streams in java What happens if I try to access a variable(which is declared outside) inside a .forEach block? Is it possible? Yes/no -Why? Hashmap vs concurrent hashmap and it’s workings. How many threads can access a concurrent hashmap at a time? Is it possible to modify a array-list while iterating it? Is there a way to do it? Some coding questions on overriding and exception handling concepts

1. Streams in Java 2. Difference btw PUT/POST methods 3. DB queries to Join and GroupBy 4. What do you mean by Single page application? 5. What all services are used in the project and how they communicated among themselves?
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Fullstack Developer

Interviewed at Deloitte

3.8★
May 23, 2022

1. Streams in Java 2. Difference btw PUT/POST methods 3. DB queries to Join and GroupBy 4. What do you mean by Single page application? 5. What all services are used in the project and how they communicated among themselves?

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