Create a Set such that only Items can be added. Prove it.
I tried to do it Generic but as I expected a compile time error is thrown.
Is there another way of doing or it is just what the book is aking?
Praveen Kumar M K
posted 4 years ago
Java is strongly typed language and the compiler error is a testament to that.
You could also try this, just for learning's sake - Now that your Set can only accept Items and since any class in Java automatically is a subclass of Object, you could use type casting and introduce an instance of Object into the Set. See what happens then.