private void runJava(PrintStream out, PrintStream err) { Binding.out = out; Binding.err = err; Binding.ctx = bundle.getBundleContext(); try { Callable<?> callable = javacService.compileJavaSnippet(code, classLoaderContext, err).orElse(ERROR); if (callable != ERROR) { Object result = callable.call(); if (result != null) { out.println(result); } code.commit(); } else { code.abort(); } } catch (Throwable e) { code.abort(); e.printStackTrace(err); } }