Can I use JavaCompiler in Google app Engine?

Question

Is there a way to invoke the Java source compiler via JavaCompiler in Google App Engine?

(I didn't see any classes in javax.tools on the white list, so I'm afraid the answer is no)

UPDATE

I'm wondering how Java Server Pages work in Google App Engine, since JSPs are compiled to servlets, which obviously would require a Java compiler?

regarding JSPs: Some (many? most?) JSP containers bring their own Java compiler. For example recent Tomcat releases use the Eclipse Java Compiler for this. They don't need those APIs. — Joachim Sauer
– Joachim Sauer, Commented Dec 22, 2010 at 9:36

Stephen C · Accepted Answer · 2010-12-22 07:45:27Z

1

The answer is no (AFAIK).

One reason that you don't see the javax.tools classes in the GAE JRE class whitelist is that they are not JRE classes! You need a JDK installation to use the Java development tools ... including the compiler.

answered Dec 22, 2010 at 7:45

Stephen C

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2 Comments

Valentin Rocher Over a year ago

Your answer (no) is good, but I think theses classes ARE in the JRE, at least as of JDK 1.6 : download.oracle.com/javase/6/docs/api/javax/tools/…

Joachim Sauer Over a year ago

@Valentin: while those interfaces exist in the JRE, there's no guarantee that you can actually get an implementation, since ToolProvider.getSystemJavaCompiler() is defined to return "null if no compiler is provided."

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