JDBC

Get disconnected with CachedRowSet

Java cuncurrency

Concurrency

Design Pattern

Core J2EE Patterns

Computer Science

Recursion 
Recursion is the process of repeating items in a self-similar way


For example 7! equals 7*6*5*4*3*2*1 


public int factorial(int n)

{
  if (n <= 1) 
    return 1;
  else
    return n * factorial(n-1);
}

Tail Recursion

Tail call Optimization

Object Oriented Designs

SOLID

S = Single Responsibility Principle
O = Opened Closed Principle 
L = Liscov Substitution Principle
I = Interface Segregation Principle
D = Dependency Inversion Principle

How I explained OOD to my wife

How to select the first/least/max row per group in SQL

How to select the first/least/max row per group in SQL

Seven Security (Mis)Configurations in Java web.xml Files

http://software-security.sans.org/blog/2010/08/11/security-misconfigurations-java-webxml-files