How to dynamically compile Java classes in Google App Engine

In answers to this question, I learned that it is not possible to invoke the Java Compiler in javax.tools from a GAE app.

• Does this limitation still apply?

• If so, what are my options for compiling Java source code into loadable class files "on the开发者_运维知识库 fly"?

No, javax.tools is still not on the Appengine's JRE Class Whitelist.

The options you have are:

1. Compile somewhere else and than transfer and load .class files on appengine.

2. Try using one of embeddable Java compilers: Janino, JDT.

3. If you can live without Java, than you might try using BeanShell for Appengine.