Android/java common tool source code, androidjava tool class

Android/java common tool source code, androidjava tool class

Anroid, common java tool source code, including file operations, MD5 algorithms, file operations, string operations, debugging information log, base64, and so on.

: Http://download.csdn.net/detail/a358763471/7803323

In software development, what tools are commonly used in java?

You can look at the api, such as the file class for saving files, and document builer for reading xml.
 
Who has some common java Regular Expression tool classes, the more the better?

You can download expresso. I think it is very useful ~ Especially group display. It is very convenient for java to use matcher. group ().