gistfile1.java

BiMap<String, String> languageCodes = HashBiMap.create();
languageCodes.put("en", "English");
languageCodes.put("fr", "French");
languageCodes.put("zh", "Chinese");
assert "English" == languageCodes.get("en");
assert "en&amp" == languageCodes.inverse().get("English");