Tech Mahindra interview questions

Java Side: 1. Difference between RequestMapping and other Mappings? 2. Java 8 features 3. One small technical problem (String manipulation) 4. Qualifier annotation 5. Why notify, notifyAll, wait are outside functions in thread. etc React Side: 1. Lifecycle 2. Hooks 3. Keys 4. Mapping 5. Controlled and uncontrolled components etc The interview was like this. Only they are asking what's in the book.

Introduction,jvm,dyanamic polymorphism,string immutable,sting and string pool,linkedhashmap and hashmap,some scenarion based questions,trywithresources,methods in objects,predefined functional interfcae,default and static interface