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《Java 9 Modules: part 1》	https://stacktraceguru.com/java9/module-introduction
Java 9 揭秘（2. 模块化系统）	https://www.cnblogs.com/IcanFixIt/p/6947763.html
http://www.cnblogs.com/IcanFixIt/p/6947763.html	http://www.cnblogs.com/IcanFixIt/p/6947763.html
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Java 9 揭秘（17. Reactive Streams ）- 林本托	https://www.cnblogs.com/IcanFixIt/p/7245377.html
	https://github.com/gumcheck/JavaGuide/blob/main/docs/java/new-features/java9.md#变量句柄
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	https://github.com/gumcheck/JavaGuide/blob/main/docs/java/new-features/java9.md#参考
https://en.wikipedia.org/wiki/Java_version_history	https://en.wikipedia.org/wiki/Java_version_history
https://www.oracle.com/java/technologies/javase/9-all-relnotes.html	https://www.oracle.com/java/technologies/javase/9-all-relnotes.html
https://www.baeldung.com/new-java-9	https://www.baeldung.com/new-java-9
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