RxJava is a Java VM implementation of Reactive Extensions: a library for composing asynchronous and event-based programs by using observable sequences.

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KeyStore Explorer is an open source GUI replacement for the Java command-line utilities keytool and jarsigner. KeyStore Explorer presents their functionality, and more, via an intuitive graphical user interface. ​

Druid是为监控而生的数据库连接池！

Tiles

Sitemesh，github

JSP是在Servlet之后出现的，用于解决Servlet生成页面过于复杂麻烦，Servlet更适合逻辑，JSP用来处理页面。

开机

开机