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Thursday, 21 November 2019

Java Threads and populating a list in real time

Thread t = new Thread(new Runnable()
            {
                @Override
                public void run()
                {
                    //do Work here...
                }

            });
            t.start();



Note, additionally, if we are having issues updating a form element, such as a jLabel, then add the following into the code or iteration:

Thread.sleep(10);// 10 milliseconds delay

This has been proven to help populate jLists for example as below;

 for (String element : myList)
            {
                try
                {
                    Thread.sleep(10);
                    listModel.addElement(element);
                    jLabel1.setText(listModel.size() + " records");
                } 

                 catch (Exception e)
                {

                }

            }


Normally this would result in a blank list.

 

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