Question 1 5 pts

In Java Collections the Set Collection can :

have duplicates

not have duplicates

can have one duplicate

can have 2 duplicates

Which of the following is NOT a Map implementation

Hashtable

HashMap

TreeMap

None of the above (They are all an implementation of the Map interface)

Which of the following methods needs to be overridden or implemented to ensure there are no duplicates in Sets

hashcode()

clone()

toString()

equals()

To sort a collection of your objects, your class can implement the __________________ interface

A class that connects an application to a data source specified by a database url is :

ConnectionManager

DriverManager

DatabaseManager

JDBCManager