java - Loading Properties File from Static Context -

i've found myself faced pretty interesting issue. have properties file in application, , attempting load static context. properties file loaded class image, static class. in eclipse works fine, when tried export jar, it's not worked.

prop.load(new fileinputstream(new  file(images.class. getclassloader(). getresource("config.properties"). tostring()))); 

this line i've tried use already, when try run program, throws error:

exception in thread "main" java.lang.nullpointerexception     @ controllers.images.loadimagefiles(images.java:47)     @ views.world.<init>(world.java:55)     @ views.world.main(world.java:40) 

i @ loss here, question is:

how load resource static context, , more importantly, need register file resource before this?

edit

after searching, i've established getresource method returning null. big question now, guess, why!? file structure follows:

project         src              controllers <-- images class is.              models              views              img              doc              config.properties <-- file want. 

i'm not entirely sure how i'm stuck answers.

put properties file in same directory class , use getresourceasstream() method instead. return inputstream there no need construct file. continue work if package classes in jar...

properties prop = new properties();  prop.load(images.class.getclassloader().getresourceasstream("config.properties")); 

or static context:

prop.load(classloader.class.getresourceasstream("config.properties"));