Can an object that instantiates the HashMap class contain multiple copies of some element as a key? How about multiple copies of some element as a value? Suppose that you want a HashMap that maps a...

Can an object that instantiates the HashMap class contain multiple copies of

some element as a key? How about multiple copies of some element as a value?

Suppose that you want a HashMap that maps a unique employee ID number to an Employee object. Give the definition for a HashMap variable

that defines and allocates the HashMap. Expect to have 100 employees in your

organization. If the employee ID number is an integer between 0 and 100, is a

map a good choice for a data structure to store this information?