# Prerequisites

Before you begin authoring JAX-WS services in Eclipse, make sure that you have the following installed on your machine:

- Eclipse 3.3, with the following plug-ins installed:
  - SOA Tools Platform (STP) 0.6
  - Data Tools Platform (DTP) 1.5
  - Eclipse Modeling Framework (EMF) 2.3
  - Graphical Editing Framework 3.3
  - Java Development Toolkit 3.2
  - J2EE Standard Tools 1.5
  - Java EMF Model 1.2
  - Model Development Tools (MDT) 1.0
  - Web Tools Platform 2.0
- Java JDK 5.0

In addition, you need the Apache Incubator CXF runtime and its corresponding Eclipse plug-in. The runtime is available at http://incubator.apache.org/cxf/.

For details of where to download the Eclipse plug-in, see the STP project home page at http://www.eclipse.org/stp/.

If you want to deploy a JAX-WS service, you need Apache Tomcat 5.5 or higher.