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	https://Github.com/61go/JavaKeeper/blob/master/docs/java/java8.md#number
	https://Github.com/61go/JavaKeeper/blob/master/docs/java/java8.md#math
	https://Github.com/61go/JavaKeeper/blob/master/docs/java/java8.md#files
	https://Github.com/61go/JavaKeeper/blob/master/docs/java/java8.md#string
	https://Github.com/61go/JavaKeeper/blob/master/docs/java/java8.md#reflection
	https://Github.com/61go/JavaKeeper/blob/master/docs/java/java8.md#faq
	https://camo.githubusercontent.com/b147f3870546a5740072ebf5a2831251357ea832feac960d685700747d61ec7b/68747470733a2f2f69303470696363646e2e736f676f7563646e2e636f6d2f37336336636133313734636533363632
	https://Github.com/61go/JavaKeeper/blob/master/docs/java/java8.md#参考
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