Re: How to call a class from another class

Pseudo Silk Kimono wrote:


Two things:

1. Try to avoid using tabs in Usenet posts.
2. UIDs are best declared final.

 > [...]


Why are storing the UID as opposed to the actual object? Assuming that
the related Attorney is in creation, there is no penalty in storing a
reference to that object as opposed to a UID referencing that. That
said, there are cases where storing UIDs is beneficial (where the space
and creation cost of the object is very high compared to the likelihood
of its being used), but for simple cases, using the actual objects
themselves is a far better idea.

I recommend you do not use the changes I detail below, but instead
change the private reference to the Attorney object itself. I include my
changes only for reference on how to deal with UIDs.


Money should not be stored using a float or double; a BigDecimal or
Integer (number of cents) should be used. Also, "-ing"s tend to indicate
(in my mind at least) a boolean variable or bit flag representing a
state; "balanceOwed" is a better name for the variable.


Rewritten method:
public void displayAttorney() {
     Attorney a = Attorney.getAttorney(primaryAttorneyIDNumber);
     System.out.println("Primary Attorney "+a.getFirstName()+" "+
         a.getLastName());
}


add:

     private Map<Attorney> attorneys = new HashMap<Attorney>();
     public Attorney(int idNumber, String lastName, String firstName,
float annualSalary) {
         // Initialize variables
         attorneys.put(idNumber,this);
     }
     public static Attorney getAttorney(int id) {
         return attorneys.get(id);
     }


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Look for the printf function of the PrintStream class for formatting.

--
Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth