fuck.java

public class Bicycle {
  // code
}

public class CoolBike extends Bicycle {
  // code
}

public void doSomething(Class<? extends Bicycle> bikeClass) {
  new Runnable() {
    public Runnable(CoolBike cb) { // need this to be generic, but it can't just use Bicycle, it needs to specify CoolBike
      // stuff
    }

    public void run() {
      // more stuff
    }
  }
}