Apache Commons Lang Java Java Common Components Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are considered to be so standard as to justify existence in java.lang. commons-lang 2008-03-18 2.4 commons-lang 2007-02-13 2.3 commons-lang 2006-10-04 2.2 commons-lang 2005-06-12 2.1