Question

public class Signal2NoiseRatio
{
    public ImagePlus SingleSNR(ImagePlus imagePlus) throws InterruptedException
    {

        new Thread()
        { 
          @Override public void run() 
          { 
              JFrame imageFrame = new JFrame("ROI");
              Container imageFrame_Container = imageFrame.getContentPane();
              IIImagePanel imagePanel = new IIImagePanel();
              imageFrame_Container.add(imagePanel);
              imagePanel.setImage(imagePlus.getImage());
              imagePanel.getDisplayedImage();
              imageFrame.setVisible(true);
              final SNRSingleImageListener sNRSingleListener = new SNRSingleImageListener(imagePanel);  
              imagePanel.addMouseListener(sNRSingleListener);
              imagePanel.addMouseMotionListener(sNRSingleListener);
          }
        }.start();


        new Thread() 
    { 
      @Override public void run() 
      { 

          for (int i = 0; i <= 2000; i++)
          { 
             System.out.println("schleife "+i);
                     // ask if useractions are done ..
          }

          synchronized( Signal2NoiseRatio.this ) 
          { 

             Signal2NoiseRatio.this.notifyAll(); 

          }
      }
    }.start();


        synchronized (this) 
        {
        this.wait();
            // if userinteractions are done, go on
        }


        return imagePlusToProcess;
    }
}

The first new Thread() perform a frame which presents an image in it. My intention was to present the image in a new thread to wait for some user interactions on the image. But the code leads the frame to a white window and the image is not visible and the frame is not usable.

In the second thread I want ask in a short interval if the user actions are done.

It is not really a nice solution but it is be possible? what’s wrong here?

Thank you stackoverflow!

Answer 1

Problem solved.

The invoker of the method was an AWT-Thread. I created a new Thread for the invoker and so the AWT-Thread was not blocked and the then frame and image could present correctly.

Thank you all for your help.