Pergunta de entrevista da empresa J.P. Morgan

Main purpose of Immutability in java Example of immutable class other than string How to store DB results in cache by improving performance Code for cache should be written in which MVC Layer Implement cache that is likely to be used by multiple threads Another question on implementing cache to retrieve DB results whose data is likely to change every 3 hours What is thread pool and executor services Purpose of thread pool Sql queries based on joins New features of Java 8 Current trends in Java Code for anagrams Code to print top 10 frequently used words in a large text file.