If you want to write and compile transformations in Java, you can install JDK and add it to the project by selecting its item, right-clicking it and selecting the Properties item in the context menu. We suggest once again you use JDK 1.6+!

Figure 16.8. Adding Java Development Kit

Then you can select the Java Build Path item and its Libraries tab. You must click the Add External JARs button on it.

Figure 16.9. Searching for JDK Jars

You can add all .jar files contained in the selected jdk folder into the Libraries tab.

After confirming the selection, the .jar files will be added to the project as shown below.

Figure 16.10. Adding JDK Jars