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Jeff Langr is a veteran software developer and author of the recent Prentice Hall book Agile Java: Crafting Code With Test Driven development. He's been developing software for 23 years and has been knowingly doing it in an agile fashion for the past six years. Langr, who has consulted for Object Mentor, is also the author of Essential Java Style (Prentice Hall, 2000) and over a dozen published articles on software development. Langr provides agile and Java software consulting and training through his company, Langr Software Solutions (http://langrsoft.com).