Determining type of object

Question

I have 2 classes inherited from the same class.
public abstract class ParentProps {
public class OneProps extends ParentProps {
public class TwoProps extends ParentProps {
}I have another class which has a method which receive an argument of type ParentProps. How can I find out if the argument is of type OneProps or TwoProps?
public class Test {
   public static void testing(ParentProps props) {
}In the above example how can I know if props object being passed is a OneProps object or a TwoProps object?

Answer 1

srhcan wrote:
I have 2 classes inherited from the same class.
public abstract class ParentProps {
public class OneProps extends ParentProps {
public class TwoProps extends ParentProps {
}I have another class which has a method which receive an argument of type ParentProps. How can I find out if the argument is of type OneProps or TwoProps?
public class Test {
public static void testing(ParentProps props) {
}In the above example how can I know if props object being passed is a OneProps object or a TwoProps object?As said by earlier poster, It is a bad design. My question would be, why you want to make the implementing class complex? The basic feature abstract class provides is hidding the complexity and helps the implementing class looks simple. I would say rather than mentioning the Parent/abstract class name in testing method. use the implementing class name. For reference you may refer abstract factory pattern.