Hashmap

[dirtycash]

...........................

[hardwired]

Code:

public class Cashier
{
    // the key will be a String value which 
    // is the email address of the account.
    // The value will be the Account object itself.
    HashMap<String, Account> accounts;

    Cashier()
    {
        accounts = new HashMap<String, Account>();
    }
}

[hardwired]

cannot find symbol - class HashMap
import java.util.HashMap;

[dirtycash]

import java.util.HashMap; - this has to go at the beginning of the code?
could you tell me what it does?


and what should this look like?

You need to write a single constructor for Cashier which initialises the field to an empty
HashMap

[hardwired]

this has to go at the beginning of the code?
Yes.
could you tell me what it does?
It tells the jvm where to look for the definition of the HashMap class.
and what should this look like?
Like this:

Code:

    Cashier()
    {
        accounts = new HashMap<String, Account>();
    }

[dirtycash]

thank you