Is there any way other than instanceof operator for object type comparison in java?

Question

I remember reading in some Java book about any operator other than 'instanceof' for comparing the type hierarchy between two objects.

instanceof is the most used and common. I am not able to recall clearly whether there is indeed another way of doing that or not.

Answer 1

Yes, there is. Is not an operator but a method on the Class class.

Here it is: isIntance(Object o )

Quote from the doc:

...This method is the dynamic equivalent of the Java language instanceof operator

public class Some {
    public static void main( String [] args ) {
        if ( Some.class.isInstance( new SubClass() ) ) {
            System.out.println( "ieap" );
        } else { 
            System.out.println( "noup" );
        }
    }
}
class SubClass extends Some{}