gistfile1.java

    private static void runJsUnitInRhino(String entryPoint)  {

        //...

        int result = proc.waitFor();
        if (result != 0) {
            throw new JSExecutionException(getStdError(proc));
        }
    }
    
    private static String getStdError(Process proc) throws IOException {
        StringBuilder sb = new StringBuilder();
        final BufferedReader reader = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
        String lineResult = null;
        while ((lineResult = reader.readLine()) != null) {
            sb.append(lineResult);
        }
        return sb.toString();
    }