Re: NullPointerException - com.opensymphony.xwork2.util.FileManager$FileRevision.needsReloading(FileManager.java:209) of "Apache Struts 2 Web Application Development" book

What version of Struts 2 are you attempting to use? On Sat, Nov 11, 2017 at 5:58 PM albert kao wrote: > I downloaded the source code of the book "Apache Struts 2 Web Application > Development" by Dave Newton from the > https://www.packtpub.com/books/content/support. > >

NullPointerException - com.opensymphony.xwork2.util.FileManager$FileRevision.needsReloading(FileManager.java:209) of "Apache Struts 2 Web Application Development" book

I downloaded the source code of the book "Apache Struts 2 Web Application Development" by Dave Newton from the https://www.packtpub.com/books/content/support. Chapter 2 had compile error with Apache Maven 3.5.0. $ mvn -version Apache Maven 3.5.0 (ff8f5e7444045639af65f6095c62210b5713f426;