Nikolai Shevchenko questions

Nikolai Shevchenko answers

• Get value from Map of Map of Map without null pointer exception
• Why does List.addAll of a reversed subList of the list cause a ConcurrentModificationException [duplicate]
• What is the best way of defining key for @Cacheable annotation for Spring
• Build predicates for a postgres jsonb column with criteria builder using JPA criteria
• How to use MapStruct for different data types?
• Add WHERE IN clause to JPA Specification
• Advantage of lateinit over null initialization in java?
• Java 8 Map Reduce on HashMap as lambda
• sequence does not exist, hibernate and JPA 2.1
• nested exception is java.lang.IllegalArgumentException: Not a managed type: class