Button information = (Button) findViewById(R.id.information);
        information.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Context context = getApplicationContext();
                CharSequence text = "Grundlagen Java-Programmierung, Grundlagen Android-Anwendung(5SWS)";
                int duration = Toast.LENGTH_SHORT;

                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
        });