执行Plan B的JDK 7，愿景：“Making things programmers do everyday easier.”；其Coin项目公布的新特性：

Improved numeric literals
Strings in switch
Reduced varargs warnings
Diamond operator
Multi-catch with more precise rethrow
try-with-resources statement

细节请参考Joseph D.Darcy的博客：http://blogs.sun.com/darcy/entry/project_coin_javaone_2010

文档下载参考：http://blogs.sun.com/darcy/resource/JavaOne/J1_2010-ProjectCoin.pdf