I'm having a bit of difficulty in understanding how to implement a TreeSet that sorts objects by a certain property. Here's my code: import java.util.*; import java.io.*; class Employee implements ...

Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions.

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.