@Override public void evictAll(){
  File[] files=cacheDirectory.listFiles();
  if (null != files) {
    for (    File file : files) {
      if (file != null)       file.delete();
    }
  }
}

@ Override public void evictAll ( ) { File [ ] files = cacheDirectory . listFiles ( ) ; if ( null != files ) { for ( File file : files ) { if ( file != null ) file . delete ( ) ; } } }
delete all objects previously saved .
