OSCore

OSCore ; Quartz, WebWork, XWork, SiteMesh gibi meşhur open-source'ların , JIRA ve Confluence gibi lisanslı ürünlerin altyapısında kullanılan, kullanımı çok kolay, daha çok fonksiyon gibi çalışan open-source class'lardan oluşmakta. Özellikle JAVA'nın Standard kütüphanesinde olması gerekip de maalesef bulunmayan bir sürü güzel metodu içeriyor:

The following is a brief description of the different utility classes provided by OSCore. Along with each short description is some example Java code that takes advantage of some of the features provided by each utility class. However, we recommend that you read the JavaDocs to completely discover all the methods and features each class provides.

• TextUtils - useful functions for manipulating Strings. Examples include: extracting primitive types, verifying e-mail addresses, splitting and joining, escaping characters, hyperlinking text, indentation, etc.
• XMLUtils - common XML functions such as parsing and printing DOM documents, performing XSL transformations and selecting nodes using XPATH.
• EJBUtils - common EJB and JNDI based functions such as looking up and narrowing home interfaces and looking up entity-beans directly.
• BeanUtils - useful methods for accessing values of objects using reflection.
• MultipartException - a special type of Exception designed to be subclassed for holding many child Exceptions. Useful if validation can throw many Exceptions and they all need to be wrapped up into and report (for example).
• Data - an Object wrapper for binary data.
• OrderedMap - a java.util.Map implementation that retains the order items were added in.
• DataUtil - a small class that helps convert Objects to their primitive types.
• DateUtil - a small class for handling ISO 8601 International Date formats.

http://www.opensymphony.com/oscore/