I am not super familiar with all the details of Java inner classes, but why can't you get most of the way there by doing something like: DB.open(new Runnable

I am not super familiar with all the details of Java inner classes, but why can't you get most of the way there by doing something like: DB.open(new Runnable() { public void run() { // ... do stuff here ... } }); You can even design your resource layers such that they can only be used this way (or are easiest to use this way). Basically, I'm just stealing the JavaScript-y way of doing this that uses closures: DB.open(function() { ... });