Talentica Full Stack Java Developer interview questions

i have 4 years of experience in Java development. This was a face to face interview and pen paper test. 1. a basic null pointer check and very basic coding question on laptop. 2. System Design Round on pen paper - design a system related to product purchasing and listing. Different design patterns and reallife questions to be answered based on your design. 3. Technical Interview - JAVA,OOPS,SQL,System Design, Kafka 4. Managerial Round - Real life scenario Based questions