Are there any alternatives to implementing Clone in Java?

Question

In my Java project, I have a vector of various types of Traders. These different types of traders are subclasses of the Trader class. Right now, I have a method that takes a

Answer 1

Uri's right, polymorphism with state opens up a big can of worms.

I think subclassing Cloneable and overrideing clone() is probably the simplest way to go. You can, I believe, make the return type covariant.