LanguageImpl implements Language { public String toString() { return locale.getDisplayLanguage(); } LanguageImpl(Locale locale); Locale getLocale(); String getDescription(); String getDescription(Language language); String getIdentifier(); int compareTo(Language l); boolean equals(Object obj); int hashCode(); String toString();  }
@Test public void testToString() { assertEquals(englishLocale.getDisplayLanguage(), english.toString()); }