I have written a small program in Java, which performs complicated and
long-lasting calculations. So I want to illustrate the progress of
these calculations by a text (percent work done) placed in JLabel
component. But I have a "small" problem - this text doesn't change
during the calculations and after them it is set at once to 100%. The
source code is as follows :

percent = 0;

for (....)

{

// calculations

percent +=... //small progress value

Label2.setText(Double.toString(percent));

}

I have searched Web and read this can be caused by non-synchronized
threads of GUI and rest of program, but I don't know how it can be
repaired. I've already tried one method (shown below) but it also
doesn't work (effects are the same as in first program):

static void setTextOnLabel(final String text)
{
     
                     
              SwingUtilities.invokeLater(new Runnable()
              {
                  public void run()
                  {
                      jLabel2.setText(text);
                  }
          });
                     
             

}

....

percent = 0;

for (....)

{

// calculations
percent +=...

setTextOnLabel(Double.toString(percent));

}

Can anyone help me? Thanks in advance

Chrosciu