[JSR308] Others possible syntaxes for type annotations

[Michael Ernst]

It's not in the charter of JSR 308 to change the syntax of keywords in
Java, so I would like to end the discussion of making "type?" and "type!"
into shorthands for types.

Discussions of where the type qualifiers might be written are fine, though
we should remember that the larger a proposed syntax change, the less
likely it is to be adopted.

                    -Mike