Java Classpath规格严格

http://stackoverflow.com/questions/402330/is-it-possible-to-add-to-classpath-dynamically-in-java

http://stackoverflow.com/questions/271506/why-system-setproperty-cannot-change-the-classpath-at-run-time/1198693#1198693

http://blog.cedarsoft.com/2010/11/setting-java-library-path-programmatically/

 http://stackoverflow.com/questions/957700/how-to-set-the-java-library-path-from-eclipse