Why aren't Enumerations Iterable?
enumeration, iterable, java
Solution
Enumeration hasn't been modified to support Iterable because it's an interface not a concrete class (like Vector, which was modifed to support the Collections interface).
If Enumeration was changed to support Iterable it would break a bunch of people's code.
Problem
In Java 5 and above you have the foreach loop, which works magically on anything that implements `Iterable`: ``` for (Object o : list) { doStuff(o); } ``` However, `Enumerable` still does not implement `Iterable`, meaning that to iterate over an `Enumeration` you must do the following: ``` for(; e.hasMoreElements() ;) { doStuff(e.nextElement()); } ``` Does anyone know if there is a reason why `Enumeration` still does not implement `Iterable`? Edit: As a clarification, I'm not talking about the language concept of an enum, I'm talking a Java-specific class in the Java API called 'Enumeration'.