Siemens

Written - Very conceptual questions from core Java. Technical - * HashMap internal implementation. * Why we need HashSet when we have HashMap. * Find duplicates in an array program. * Deep copy vs. shallow copy program. * Singleton - all categories

One written round contained a few analytical and a few programming questions, followed by an interview. The 1-on-1 interview will be easy; they mostly check if you understand programming concepts. Be properly prepared for data structures also.

I had four interviews. The first was a general phone call, designed to give the hiring manager a gut feeling about you. Then, two panel interviews followed back-to-back: * One was highly technical, where they really hammered down on your resume