Methods, systems, and products are provided for deploying Java applications in resource constrained environments. Embodiments include identifying a resource constraint of a target system and filtering the Java application in dependence upon the identified resource constraint. In many embodiments, identifying a resource constraint of a target system includes identifying limited runtime processing capabilities of the target system and filtering the Java application in dependence upon the identified resource constraint includes preprocessing a tag library of the Java application. In some embodiments, preprocessing a tag library is carried out by identifying a tag library descriptor of the Java application and copying a listener from the tag library descriptor to a deployment descriptor for the Java application.