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Apache Commons Lang

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Add and use `IllegalArgumentExceptions` to combine creating `IllegalArgumentException` instances with formatted messages using `String#format()`.

LANG-1484: Allow decimal point at the end of the String because Double.parseDouble, Float.parseFloat allow this. https://issues.apache.org/jira/projects/LANG/issues/LANG-1484 IMO, we can allow decimal at end of String. Please suggest.

Currently, a DiffResult and a Diff can only handle the differences of two objects of the same type A, and we cannot set custom differences for a DiffResult if encapsulated...

Stores a single value, either of type `L`, or of type `R`. Fits in between `Stream` and `Optional` in terms of applying transformations conditionally (and safely). An `Either` implementation is...

When an `OutputStream` instance wraps an underlying `ByteArrayOutputStream` instance, it is recommended to flush or close the `OutputStream` before invoking the underlying instances' `toByteArray()`. Although in some of these case...

This method returns the input String on the below conditions: * If the input String is null * if open`|`close`|`replace Strings are null Added to pull [`#395`](https://github.com/apache/commons-lang/pull/395)

Hello, I have been using a method in my company's (avadasoftware.com) code base that I created for getting a list of classes that implement an interface. These classes reside in...

Hi, While working on Commons Imaging 1.0-alpha release candidate, I noticed that after copying most of the entries missing from Commons Lang's `pom.xml`, I couldn't pass the [step](https://commons.apache.org/releases/prepare.html) that asks...

My alternative implementation for #332 See https://issues.apache.org/jira/browse/LANG-1400 for details