[FIXED] JFrame ActionPerformed on a button takes full time until it finishes the code

Issue

It's my first time making GUI on java, and I have a small issue that is pretty annoying.

My code looks something like this.

private void RunButtonActionPerformed(java.awt.event.ActionEvent evt){
    richText.append("Starting...");
    try{ something happens here }
    richText.append("Done...");
}

The problem is that when I click run button, it waits until it finishes the task and print "Starting..." and "Done..." at the same time. How do I make it print "Starting" first before and print "Done" after?

Solution

I followed the tutorial for SwingWorker as suggested on the comment, and it worked! It looks something like this.

`private class Worker extends SwingWorker<Void, Void>{
    protected Void doInBackground() throws Exception{
        try{ things happen here }
        return null;
    }
    @Override
    protected void done(){
        try{ get (); } catch (){}
    }
}

And to call this, RunButtonActionPerformed just needs new Worker().execute().

Answered By - lollip0o0p
Answer Checked By - Mildred Charles (JavaFixing Admin)