Check if a object is a instance of a class (but not a instance of its subclass)

Question

For this example:

public class Foo{}

public class Bar extends Foo{}

....

void myMethod(Foo qux){
   if (checkInstance(qux,Foo.class)){
     ....
   }
}


        

Answer 1

you should use instanceof

if(qux instanceof Foo && !(qux instanceof Bar)) {
    ...
}

This works with both classes and interfaces, so in most cases it should preferred over .class which does not work with interfaces.