File file = new File(tmpdir + File.separator + "pmaptest.map"); file.delete(); PersistentMap<String, String> pm = new PersistentMap<String, String>(file, false, null); pm = new PersistentMap<String, String>(file, false, null); System.out.println(lastval); System.out.println(pm.get(key + (writes - 1)));