Java Arrays & Generics : Java Equivalent to C# IEnumerable<T>

arrays, generics, java

Solution

`Iterable<String>` is the equivalent of `IEnumerable<string>`.

It would be an odditity in the type system if arrays implemented `Iterable`. `String[]` is an instance of `Object[]`, but `Iterable<String>` is not an `Iterable<Object>`. Classes and interfaces cannot multiply implement the same generic interface with different generic arguments.

`String[]` will work just like an `Iterable` in the enhanced for loop.

`String[]` can easily be turned into an `Iterable`:

Iterable<String> strs = java.util.Arrays.asList(strArray);

Prefer collections over arrays (for non-primitives anyway). Arrays of reference types are a bit odd, and are rarely needed since Java 1.5.

Problem

Original source