Question d’entretien chez Infogain

core java mostly collection,concurrent collection,multithreading,synchronization,basic where all overiding is not applicatble,static methods,final keyword,exceptions,pattern program. Write an api to print name of employees from given phone number.you had to write code on db connection,prepared statement and then returning the value. Write all inbuild methods of object class. Also prepare spring ,hibernate and spring boot.