How does HashMap work internally in Java?
Java Software Developer Interview Questions
4,195 java software developer interview questions shared by candidates
2. Second Smallest element in array
3. Student and grade average problem (famous in other glassdoor reviews)
Use of Design Patterns, SOLID principles when reviewing code.
Trapping Rain water First Unique Character in a String
what will you do when pod enter trash loop?
Questions was based on arrays and strings
The interviewer sent me two small projects with some missing functionalities, he gave me tasks to do on the fly then asked couple of follow up questions about thread safety and exception catching.
Multithreading, streams, dependency injection, interfaces, describe a bug you encountered in prod and how you fixed it, what technologies you use, your deployment cycle
Theoretical: Code smell Java memory leak: create Class the generates immutable objects use Record java 14, obiect immutable, how objects are saved Deep copy vs shallow copy What is a pure function? Try with resources Seal class java 17 stream operation intermediale and final, Lambda and functional interfaces Marker interface default method solid principles. Design patterns; proxy decorator Hibernate proxy Lazy loading , Hibernate cache level 2 , @cachable @transaction : isolation vs propagation and ACID principles Practical: Calculate unique number of occurrences
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