Re: enum or array ?

"Mike Schilling" <>
Fri, 29 May 2009 07:42:57 -0700
Lew wrote: wrote:

Is it better to define some constants this way and what are pros
cons ? String[] currency = {"US","EUR"....};

or to do this

public enum CURRENCY{

'enum' is better.

BTW, the convention for class names is mixed (camel) case, with the
first letter capitalized, thus, "Currency".


Please follow indentation conventions.


String currency ;

public CURRENCY(String tmp){

currency = tmp;
public getCurrency(){

Also, it often pays to override 'toString()' to return the custom
string representation.

return currency;


'enum' is better - you get the compiler's cooperation to make sure
you are using correct values. You can 'switch()' on it. You can
behaviors on it.

You can use "==" instead of ".equals()" to compare them.

You can deal with any casing issues in one place (where you convert a
user-entered string to an enum), and not worry about them anywhere

Use more meaningful enum names, though, like 'US', 'EUR', etc.

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