Fullstack Developer Interview Questions

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
avatar

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
avatar

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

Viewing 3281 - 3290 interview questions

Glassdoor has 3,997 interview questions and reports from Fullstack developer interviews. Prepare for your interview. Get hired. Love your job.