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3,997 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

Use the each function you've created in the first question and create a reduce function which gets: An array, A reducer function, Initial Value The reducer function get 2 variables: An accumulator, Value to add You are not allowed to use any kind of loop other than the each function you've created in the first part
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Fullstack Developer

Interviewed at Tailor Brands

3.2★
Mar 7, 2020

Use the each function you've created in the first question and create a reduce function which gets: An array, A reducer function, Initial Value The reducer function get 2 variables: An accumulator, Value to add You are not allowed to use any kind of loop other than the each function you've created in the first part

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