在执行除草时，在与main不同的其他线程中启动swing gui以更新jtextarea

Question

My program starts at the moment

          public static void main(String[] args){
          new Gui().setVisible(true);
         new Program();   }

I am using Jtextarea to display results. I have method in Gui display(String). it appends text to Jtextarea. I call display(String ) from Program to display result. I have methods in Program to do some work and call that method to display at the end of execution the Program method. But if I call display(String) at the beginning of execution it will not display in Jtextarea untill method of the Program finishes. It not updating the Gui. I think I need to use invoklater and new runnable to start EDT for Gui but how to do it in main together with new Program. So what whould be the solution for this problem? Thank you for your help.

PS I did Googled but can't get it how to do it. So this is the last resource

Answer 1

A big thing that everyone seems to be overlooking: This is an actual quote from the swing documentation for JTextArea.append :

This method is thread safe, although most Swing methods are not. Please see How to Use Threads for more information.

So it seems that SwingUtilities.invokelater should have nothing to do with this. I really don't know what's causing your problem. If you post some code, I might be able to help more.

P. S: I would have put this as a comment, but I do not have the reputation to do so.