public static List<Fragment> TOOLS(){
        List<Fragment> fragments=new ArrayList<>();
        fragments.add(new SubjectFragment());
        fragments.add(new ExamFragment());
        fragments.add(new AdminToolsFragment());
        return fragments;
    }

switch (textView.getId()) {
            case R.id.subject:
                onButtonPressed(new SubjectFragment(), "Subject");
                break;
            case R.id.exam:
                onButtonPressed(new ExamFragment(), "exam");
                break;
            case R.id.tools:
                onButtonPressed(new AdminToolsFragment(), "adminTools");
                break;
}

fragments.get(position);

new MyFragment();

fragments.add(new SubjectFragment());
    fragments.add(new ExamFragment());
    fragments.add(new AdminToolsFragment());