Problem when using JVLC/JNA libraries in Defect Reports Posted March 1, 2009 · Report reply fixed myself i added a class to the jna jar. now i can set outside the jna package Structure.REQUIRES_FIELD_ORDER and i must not modify the jvlc classes:) Do you mean you recompiled the Structure class such that REQUIRES_FIELD_ORDER field is set to false? Where did you get the source codes for JNA? Or did you decompile the class files? Can you send me your jna.jar? Hmm, nevermind. I got it to work. Can't wait for tomorrow! Need to set a package visible field in Structure, for those who wanna know.