For a personal project I am working on a way to recognize a String through a JOptionPane. Now my goal is to also have it recognized when I put it in the console as well and then close the JOptionPane. For achieving this I was trying to implement a Thread which was supposed to work parallel. So when the JOptionPane would open also the console should be able to get commands and react to them using a Scanner. However it doesn’t work at all. The Thread is not working parallel to the program but it seems it isn’t reacting.

In another topic I already asked about how to make it that my Java program can recognize a string input parallel either from the console or from a JOptionPane (see here for reference: Parallel string recognition in console and JOptionPane). The comments there told me to use a Thread.
Sadly this went nowhere and after several tries I am completely lost on what to do anymore.