java官方教程
java教程
http://docs.oracle.com/javase/tutorial/
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反射
http://docs.oracle.com/javase/tutorial/reflect/TOC.html
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泛型
http://docs.oracle.com/javase/tutorial/java/generics/index.html
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集合
http://docs.oracle.com/javase/tutorial/collections/index.html
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并发
http://docs.oracle.com/javase/tutorial/essential/concurrency/index.html
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