CODEWITHSUNDEEP
javamultithreadingswinginvokelater
C graphics
C graphics

Reputation: 7458

How to check invokelater is done

In the code below I want to do something after invokeLater is done. 1) I can not use invokeAndWait due to setModel being called by dispatcher. 2) I can not change the value of a final variable inside thread! then how can I wait for involeLater to be done first?

 boolean isDone=false;
 SwingUtilities.invokeLater(new Runnable(){public void run(){
    setModel(new DefaultTableModel(oRecordTable, sIP_TABLE_COL_NAMES_LIST));
    isDone = true; // CAN NOT BE CHANGED HERE, AS HAS TO BE FINAL
 }});
 while (!idDone){
 //wait
 }
 // do something here after the invokeLater is done

Upvotes: 0

Views: 648

Answers (1)

R.Moeller
R.Moeller

Reputation: 3446

You could do that using a CountDownLatch. BUT this will be exactly the same as using invokeAndWait(), blocking the current Thread, so it does not make any sense.

correct:

SwingUtilities.invokeLater(new Runnable(){public void run(){
    setModel(new DefaultTableModel(oRecordTable, sIP_TABLE_COL_NAMES_LIST));
    isDone = true; // CAN NOT BE CHANGED HERE, AS HAS TO BE FINAL

    // do something here after the invokeLater is done <=====

 }});

CountDownLatch (useless, see above)

final CountDownLatch latch = new CountDownLatch(1);

SwingUtilities.invokeLater(new Runnable(){public void run(){
    setModel(new DefaultTableModel(oRecordTable, sIP_TABLE_COL_NAMES_LIST));
    isDone = true; // CAN NOT BE CHANGED HERE, AS HAS TO BE FINAL

    latch.countDown();

 }});

latch.await(); // could use invokeAndWait as well if blocking thread here ..

Upvotes: 1

Related Questions