Execute a commande line in synchronous call mode

callcommandline.java

    /**
     * Execute a commande line in synchronous call mode
     * @param line command line
     * @return result
     */
    public String EXECUTE_CMD(String line) {
        String retValue = "";
        try {
            if (!line.equalsIgnoreCase("")) {
                Process p = Runtime.getRuntime().exec(line);
                try {
                    JoyReadStream s1 = new JoyReadStream("stdin", p.getInputStream());
                    //ReadStream s2 = new JoyReadStream("stderr", p.getErrorStream ());
                    s1.start();
                    //s2.start ();
                    p.waitFor();
                    retValue = s1.getCmdreturn();
                } catch (InterruptedException e) {
                    retValue = e.toString();
                } finally {
                    if (p != null) p.destroy();
                }
            }
        } catch (IOException ex) {
            retValue = ex.toString();
        }
        return retValue;
    }