Summary
I recently interviewed with Global Logic, where I encountered questions on core Java concepts, design patterns, and a practical stream-based problem to identify employees with the highest salary per department.
Full Experience
I recently had an interview for a Java role at Global Logic. The first round focused heavily on my understanding of Java fundamentals and practical application of design patterns. I was asked several questions about core Java concepts, including the immutability of the String class versus StringBuffer and the modern usage of private methods within interfaces.
The discussion then shifted to my project experience, where I had to explain and justify the design patterns I had implemented. Finally, a specific coding challenge was presented, involving stream processing to manipulate employee data.
Interview Questions (4)
Why is the String class immutable in Java? Discuss the reasons behind this design choice and explain why StringBuffer (or StringBuilder) is mutable in contrast.
What is the use case or purpose of having private methods within an interface in Java? Explain the scenarios where this feature is beneficial.
Explain the design patterns you have used in your projects. Be prepared to discuss their implementation, the problems they solved, and the benefits they provided.
Given a list of employees, where each employee object contains their department name and salary, find out the names of all employees whose salary is the highest in their respective department. This problem is related to stream processing.