How to get all open applications on Mac

Question

I'ld like to get all open applications on mac. I'm try to code below, but this code get all open process on mac. I need only the applications that show on command+tab. Tks!

    try {
        String line;
        String[] cmd = {"/bin/sh", "-c", "ps -ef | grep .app | awk '{print $2}'"};
        Process p = Runtime.getRuntime().exec(cmd);

        BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
        while ((line = input.readLine()) != null) {
            list.add(line);
        }
        input.close();
    } catch (Exception err) {
        err.printStackTrace();
    }