Calling a Method via Reflection Inside a Thread is not Working

In my ScrapingISA class i have multiple Methods. I want to call each Method in a single Thread (concurrently). Goal: make everything faster (since im using Selenium for each method with a implicit-wait of 3 seconds)

openThreads() is my Method which gets all necessary Methods (all methods starts with "get" and its length are bigger than 6 chars, so in total I get 7 methods, which is correct) which id like to call concurrently:

    private void openThreads() {
    Method[] methods = this.getClass().getDeclaredMethods();
    for(Method method: methods) {
        if(method.getName().startsWith("get") && method.getName().length() > 6) {
            new Thread(new Runnable() {
                public void run() {
                    ScrapingISA scraping = new ScrapingISA(kurzzeichen, passwort);
                    try {
                        method.invoke(scraping);
                    } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
    }
}

I also debugged it and somehow the methods don't get invoked at all, neither of them! What am I missing? I'd appreciate any help! ... I was so lost that I even tried to sys-out some stuff after the invocation... but nothing was written in the console..