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包含了很多Java经典问题分析和程序实现。(Java contains a lot of classical analysis and procedures to achieve.)

本文先简要地介绍正则表达式的入门知识，然后以Jakarta-ORO API为例介绍如何使用正则表达式。(This article first briefly describes introductory knowledge of regular expressions, and then to Jakarta-ORO API example describes how to use regular expressions.)

适用于初学者，java编写的室内温度模拟测试，根据现有数据模拟(For beginners, java prepared by the indoor temperature simulation tests, simulations based on available data)

Runs this test from the command line.

说明：  全书分四个部分：基础知识、函数式数据处理、高效Java 8 编程和超越Java 8。(The book is divided into four parts: basic knowledge, functional data processing, efficient Java 8 programming and beyond Java 8.)

spingsecurity的demo，初学者可根据注释和代码进行学习(Spingsecurity demo, beginners can learn from comments and code)

Escaping to the same target from both the try and catch blocks of try..catch..finally should not fail at compile-time.

Convert integer format IP into xxx.xxx.xxx.xxx format for Andriod.

安卓java模拟系统发送短信的功能，获得系统的权限。(The android Java simulation system, the function of the text get the permissions system.)

说明：  java AES 和 DES加密解密工具类(Java AES and DES Encryption and Decryption Tool Class)