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THE PRIMARY BENEFIT of learning about design patterns is that understanding them will help you improve your code. Design patterns can make your code smaller, simpler, more elegant, easier to maintain, and more powerful. For design patterns to pay off, you need to see them manifest in working code, and you must become comfortable building and rebuilding design patterns into a codebase. Because it can be helpful to start with working examples, this book includes many examples that show the use of design patterns in Java code. Building the Oozinoz source and walking through the code examples that support this book’s text will help you to begin using design patterns in your own code.