它可以帮你解决以下问题：
1. You are faced with a lot of Java archives and you don’t know how they relate
2. You need to know in which archive(s) a class is located or if it is missing from the class-path
3.You need quick access to version identifiers and the OSGi status
比如说，要检查某个类是否存在于WEB-INF/lib下的多个jar文件中，就可以这个工具。
Tattletale可作为独立的命令行工具使用，也可以用作Maven插件。它还计划与Hudson集成。