strange bug - how to pause a java program?
- by TerraNova993
I'm trying to:
display a text in a jLabel,
wait for two seconds,
then write a new text in the jLabel
this should be simple, but I get a strange bug:
the first text is never written, the application just waits for 2 seconds and then displays the final text. here is the example code:
private void testButtonActionPerformed(java.awt.event.ActionEvent evt) {
displayLabel.setText("Clicked!");
// first method with System timer
/*
long t0= System.currentTimeMillis();
long t1= System.currentTimeMillis();
do{
t1 = System.currentTimeMillis();
}
while ((t1 - t0) < (2000));
*/
// second method with thread.sleep()
try {
Thread.currentThread().sleep(2000);
} catch (InterruptedException e) {}
displayLabel.setText("STOP");
}
with this code, the text "Clicked!" is never displayed. I just get a 2 seconds - pause and then the "STOP" text.
I tried to use System timer with a loop, or Thread.sleep(), but both methods give the same result.
