above question Solution is below working
:-
public class LoadFileFromInsideJarResourceFolder {

public void getFileFromInsideJarResourceFolder() throws IOException {
    List<InputStream> inputStreamArray = new ArrayList<>();
    ClassLoader cl = this.getClass().getClassLoader();
    ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(cl);
    /*use your folder name or use without folder name if u dont have  folder and your file is in resource folder*/
    Resource[] resources = resolver.getResources("classpath:folder name/**");
        for(Resource resource :resources){
            if (resource.isReadable()) {
                inputStreamArray.add(resource.getInputStream());
            }
        }
        for(InputStream inputStream :inputStreamArray){
            File file = File.createTempFile("temp-file-any-name", ".xml(use any file format)");
            try {
                FileUtils.copyInputStreamToFile(inputStream, file);
            } finally {
                IOUtils.closeQuietly(inputStream);
            }
            // use this fileContent as per your requirement
        }

}

}

Nothing….Solution is working!!!