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6,015 java senior interview questions shared by candidates

I think something wrong with this company. They are sending assignment and it seems that they do not mind that after a week I received a long rejection email it is talking about you was not selected! I replied to them why you are sending assignment and you are wasting candidates time? It seems that there is a bug in their recruitment system now!
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Senior Java/Back-end Developer

Interviewed at Jimdo

3.4★
Jun 22, 2018

I think something wrong with this company. They are sending assignment and it seems that they do not mind that after a week I received a long rejection email it is talking about you was not selected! I replied to them why you are sending assignment and you are wasting candidates time? It seems that there is a bug in their recruitment system now!

Coding round - 1) Balanced bracket program using stack Check for Balanced Brackets in an expression 2) Print sequence using 4 threads 3) Convert number to binary & find the longest number of zeros eg. 1256 -> 10011101000 -> output 3
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Senior Java Developer

Interviewed at UBS

3.7★
Mar 16, 2024

Coding round - 1) Balanced bracket program using stack Check for Balanced Brackets in an expression 2) Print sequence using 4 threads 3) Convert number to binary & find the longest number of zeros eg. 1256 -> 10011101000 -> output 3

-How would you check on Unix, if particular process is alive/running on the machine? -What is the difference between TCP and UDP? -How would you prevent deadlock in Java program? -How would you implement thread-safe counter? -What are benefits of using ConcurrentHashMap vs synchronized HashMap?
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Senior Java Developer

Interviewed at UBS

3.7★
Oct 11, 2015

-How would you check on Unix, if particular process is alive/running on the machine? -What is the difference between TCP and UDP? -How would you prevent deadlock in Java program? -How would you implement thread-safe counter? -What are benefits of using ConcurrentHashMap vs synchronized HashMap?

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