How to dynamically compile Java classes in Google App Engine

Question

In the answers to this question, I found out that it is not possible to call the Java Compiler in javax.tools from a GAE application.

• Is this restriction used?

• If so, what are my options for compiling Java source code into loadable class files on the fly?

Answer 1

No, javax.tools is still missing from the Appengine JRE class whitelist .

The options you have:

• Compile elsewhere and then transfer and upload .class files to appengine.

• Try using one of the embedded Java compilers: Janino , JDT .

• If you can live without Java, you can try using BeanShell for Appengine .