1. Modify the bag from the previous exercise so that all of the add methods attempt to make a clone of any item that is added to the bag. These clones are then put in the bag (rather than just putting...

1. Modify the bag from the previous exercise so that all of the add methods attempt to make a clone of any item that is added to the bag. These clones are then put in the bag (rather than just putting a reference to the original item into the bag). Because you don’t know whether the type of items in the bag have a public clone method, you’ll need to attempt to clone in a manner that is similar to Figure 5.10.