Apache Commons Lang is a package of Java utility classes for the Java lang packages, classes that could be considered standard to justify their existence in java.lang. The code is tested using the latest revision of the JDK for supported LTS releases: 8, 11, 17, 21, and 25. See https://github.com/apache/commons-lang/blob/master/.github/workflows/maven.yml Please ensure your build environment is up-to-date and kindly report any build issues. Starting with Commons Lang 3.9, we target Java 8 and use those features. For advice on upgrading from 2.x to 3.x, see https://commons.apache.org/lang/article3_0.html