Brodie Brodie - 6 months ago 23
Java Question

Does javax.tools depend on the JDK?

I want to use

JavaCompiler
to dynamically create some classes.

I found the source code of the
javax.tools
package, but there is no implementation; some posts on the internet say it depends on
tools.jar
, I am not sure
tools.jar
associates with JRE.

So, can I run the program in a JRE environment without JDK installed?

Another question, what is the implementation detail of
JavaCompiler
, is it creating a new process to invoke the
javac
command?

thanks

Answer

JRE's need to include the interfaces, and classes in that package, but do not need to provide implementations.

Sun's JRE doesn't, and returns null from calling ToolProvider.getSystemJavaCompiler().

This other question addresses java 5.

Here's a blog post by Morten Nobel-Jørgensen on how to use eclipse's compiler as an implementation of javax.tools.JavaCompiler.

JavaCompiler javac = new EclipseCompiler();
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