How should I cast for Java generic with multiple bounds?

Question

Is it possible to cast an object in Java to a combined generic type?

I have a method like:

public static  void doSomet         


        

Answer 1

As a workaround, you could define another interface FooBar that extends Foo and Bar and have your class implement that. It doesn't even have to be a top-level interface - you can declare it private if you don't want to clutter up or retrofit the rest of your code:

private interface FooBar extends Foo, Bar {}
public void problemFunction (Object o) {
  if ( o instanceof Foo && o instanceof Bar) {
      doSomething((FooBar) o);
  }
}