Uses unchecked or unsafe operations message

[Robbinz]

Hi im fairly new to java. Ive designed a banking system using RMI. Im using a hashtable to contain my account details but every time I try to compile its giving me the warnings;

uses unchecked or unsafe operations.

I dont know what these warnings are for. Is it possible cause im using RMI but havent added a security manager?

Tanks

[hardwired]

Welcome to generics. To start: Lesson: Generics.

[Robbinz]

Cool thanks.