private static void pruneTemp(final File dir) {
for (final String file : dir.list()) {
if (file.endsWith(tempExt)) {
new File(dir, file).delete();
}
}
}
private void getCacheFileList(final File dir, final HashSet<Long> currentFiles) {
for (final String file : dir.list()) {
final Long cacheFileId = isCacheFile(file);
if (cacheFileId != null) {
currentFiles.add(cacheFileId);
}
}
}