Question

I’m new in Java, and I have seen a ArrayList example like this.

  listing = new ArrayList<Lot>();

I know that if I want to create an empty array list. Then I will use ArrayList()

But I don’t understand what is the <Lot> between the “ArrayList” and “()“.

Can someone explain it to me?

Thanks

Answer 1

This is Java Generics. The <Lot> indicates that the ArrayList will contain only objects of type Lot. It is useful because the compiler can do type checking on your ArrayList.