Export a java project to a JAR - java project include files

okay All,i have been glooging this for the past hour but not getting any good response.

i have a java project, in the project i use code that read MULTIPLE files from folder,
as far as i saw we can access file using getClass().getResource

as for set of files, i am getting results ( how to add jar file to project) >:(

so here is my directory :
http://s25.postimg.org/64r06jwbz/inventory.png

and here is my code extract where i access a set of files:
how should i proceed gurus ??

	File folder = new File("src/jp/images/");
	File[] listOfImageFiles = folder.listFiles();		
	ImageData[] imgArray= new ImageData[listOfImageFiles.length];
	int count=0;
	
	for(File f:listOfImageFiles){
		
		if(f.isFile()){
			imgArray[count]= new ImageData(f);
			count++;
			
			
		}//close if statement
	}//close for loop