static File javaCompile_overBot(S src) {
  ret javaCompile_overBot(src, "");
}

// returns path to jar
static synchronized File javaCompile_overBot(S src, S dehlibs) {
  ret new File(assertNotNull(matchOK(sendQuietly("Compiler Bot", "Please compile this Java text: * with libraries *", src, dehlibs))));
}