java开发人员，最应该学习和熟练使用的工具类。google guava.(谷歌 瓜娃)

学习参考文章：

　　http://blog.csdn.net/wisgood/article/details/13297535

　　http://ifeve.com/google-guava/

　　http://www.importnew.com/15476.html

maven地址：

　　http://mvnrepository.com/artifact/com.google.guava/guava

目前最新：

<!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>19.0</version>
</dependency>

<!-- https://mvnrepository.com/artifact/com.google.guava/guava --><dependency>    <groupId>com.google.guava</groupId>    <artifactId>guava</artifactId>    <version>19.0</version></dependency>