Why can we change the unmodifiable list if we have the original one?

Question

By looking at the code of Collections class, i got to know that when we are using the method unmodifiableList(List list) or unmodifiableCollection(Coll

Answer 1

1. you should go for creating new Object of a list, only when the original Object is going to be changed and you need a backup , when someone corrupts it , u can replace by new Object.

2. To create a ummodifiable object, i will wrap the original object and prevent add ,remove by throwing exception. but u know ,i can change each object present in the list .like if u have a person object in an umodifiable list , i can still change the name of the person object in the list.