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Apache 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.
Last Release on Nov 4, 2017
The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.
Last Release on Nov 25, 2015
Apache Commons Compress software defines an API for working with compression and archive formats. These include: bzip2, gzip, pack200, lzma, xz, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4, Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.
Last Release on Feb 7, 2018
The Apache Commons Math project is a library of lightweight, self-contained mathematics and statistics components addressing the most common practical problems not immediately available in the Java programming language or commons-lang.
Last Release on Mar 17, 2016
Commons-IO contains utility classes, stream implementations, file filters, and endian classes.
Last Release on Oct 9, 2012
The Apache Commons Object Pooling Library.
Last Release on Dec 16, 2017
Apache Commons Text is a library focused on algorithms working on strings.
Last Release on Mar 16, 2018
Apache Commons Exec is a library to reliably execute external processes from within the JVM.
Last Release on Nov 3, 2014
Tools to assist in the reading of configuration/preferences files in various formats
Last Release on Oct 8, 2017
The Apache Commons CSV library provides a simple interface for reading and writing CSV files of various types.
Last Release on Aug 26, 2017