DXC technologies interview questions

DXC technologies interview questions (Held on 20 march 2018 ).

In DXC there are following round if you are going for 2-4 years experience.
1.technical round(normally they ask core java , spring mvc and hibernate).
2.technical round (They ask core java).
3.Managerial round round .

Following question is asked in DXC – 

1.What is difference between proxy object and real object?
2.Difference between @controller and @component.
3.Difference between primary key,foreign key and unique key.
4.Difference between final ,finally,and finalize.
5.Types of class loader.
6.What is root of collection?
7.How to convert a String number into integer?
8.Can you decrease the size of column of a table?