I have a Hashset that has been populated with Penny objects and I want to create a method to remove one of these Penny objects from the HashSet and return it. Here is the method I have created to do this but it does not work as I get error messages. can someone explain to me the correct way of doing this 

```
public Penny removePenny(){

    if(penniesSet.size()<= 0){
        return null;
    }
    else 
        penniesSet.remove(Penny)

    return penniesSet.get(Penny)
}

```