To run AllDay, a Java 2 Standard Editition (J2SE) Runtime Environment (JRE) of version 1.4 or higher is necessary. To work with the source code, a Software Development Kit (SDK) for J2SE version 1.4 or higher is required.
J2SE JRE and SDK are available at no charge at
http://java.sun.com/getjava/download.html
Upcoming versions of AllDay use calendar components from an open source library named "International Components for Unicode for Java" (ICU4J). ICU4J is maintained by International Business Machines, Inc. at
and will be included in the distribution package of AllDay as appropriate.