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Head First Design Patterns by Kathy Sierra, Bert Bates, Elisabeth Robson, Eric Freeman

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Appendix C. Mighty Gumball

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Without your help the next generation may never know the joys of the gumball machine. Today, inflexible, poorly designed code is putting our Java-powered machines at risk. Mighty Gumball won’t let that happen. We’re devoting ourselves to helping you improve your Java and OO design skills so that you can help us build the next generation of Mighty Gumball machines.

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Come on, Java toasters are sooo ‘90s, visit us at http://www.wickedlysmart.com.

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