public JavaEvaluator(String id) {
shellId = id;
packageId = "com.twosigma.beaker.javash.bkr"+shellId.split("-")[0];
cps = new ClasspathScanner();
jac = new JavaAutocomplete(cps);
classPath = new ArrayList<String>();
imports = new ArrayList<String>();
exit = false;
updateLoader = false;
myThreadGroup = new ThreadGroup("tg"+shellId);