It's possible to use generic field info on @Delegate?

[joseaio]

One example,

   @Delegate(types=Collection.class)
   private final Collection<String> collection = new ArrayList<String>();

On parse/compilation time access to declaration of "collection" field to gets their type (Collection<String>) and use (generic) to generate methods with this generic

  public void add(String s)
  public void add(Collection<String> s)
  ...

It's possible?
 

[Reinier Zwitserloot]

Possible-ish.

Two notes:

A) In this case, you don't need it; if there's no 'types=' then the type of the field is taken, and this is Collection<String>, which is exactly what you want. For this snippet, just go with "@Delegate" without any further parameters.

B) The delegate type does not have to match the field type. You can just make a private inner interface with each method you want delegated. For example:

private interface StringCollection implements Collection<String>() {}

@Delegate(types=StringCollection.class) List<String> list = new ArrayList<String>();