On Friday 2008-01-16 I made a presentation for my work partners at Arx ICT about Security and its usage in Java.
The presentation starts by giving a very briefed and comprehensive introduction to General Security Concepts (Theory).
The presentation contains many common code snippets. These code snippets are very useful, they will help you in most security aware programs.
Clipping is a handy way to collect important slides you want to go back to later.