Examples of java.awt.image.ImageObserver.imageUpdate()

java.awt.image.ImageObserver.imageUpdate()
This method is called when information about an image which was previously requested using an asynchronous interface becomes available. Asynchronous interfaces are method calls such as getWidth(ImageObserver) and drawImage(img, x, y, ImageObserver) which take an ImageObserver object as an argument. Those methods register the caller as interested either in information about the overall image itself (in the case of getWidth(ImageObserver)) or about an output version of an image (in the case of the drawImage(img, x, y, [w, h,] ImageObserver) call).
This method should return true if further updates are needed or false if the required information has been acquired. The image which was being tracked is passed in using the img argument. Various constants are combined to form the infoflags argument which indicates what information about the image is now available. The interpretation of the x, y, width, and height arguments depends on the contents of the infoflags argument.
The infoflags argument should be the bitwise inclusive OR of the following flags: WIDTH, HEIGHT, PROPERTIES, SOMEBITS, FRAMEBITS, ALLBITS, ERROR, ABORT. @param img the image being observed. @param infoflags the bitwise inclusive OR of the following flags: WIDTH, HEIGHT, PROPERTIES, SOMEBITS, FRAMEBITS, ALLBITS, ERROR, ABORT. @param x the x coordinate. @param y the y coordinate. @param width the width. @param height the height. @return false if the infoflags indicate that theimage is completely loaded; true otherwise. @see #WIDTH @see #HEIGHT @see #PROPERTIES @see #SOMEBITS @see #FRAMEBITS @see #ALLBITS @see #ERROR @see #ABORT @see Image#getWidth @see Image#getHeight @see java.awt.Graphics#drawImage

                observer = i.next();
            } catch (ConcurrentModificationException e) {
                i = observers.iterator();
                continue;
            }
            observer.imageUpdate(this, imageState, x, y, width, height);
        }


    }


    private void forceToIntARGB(){

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        synchronized (observers) {
            for (Iterator i = observers.iterator(); i.hasNext();) {
                ImageObserver observer = (ImageObserver) i.next();


                boolean result = observer.imageUpdate(bi, flags,
                        startx, starty,
                        width, height);


                // if result is false, the observer no longer wants to
                // be notified of changes

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        synchronized (this.observers) {
            for (Iterator<ImageObserver> i = this.observers.iterator(); i.hasNext();) {
                ImageObserver observer = i.next();


                boolean result = observer.imageUpdate(bi, flags,
                        startx, starty,
                        width, height);


                // if result is false, the observer no longer wants to
                // be notified of changes

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            boolean ret = next.newInfo(img, info, x, y, w, h);
            ImageObserver myiw = myref.get();
            if (myiw == null) {
                // My referent is null so we must prune in a second pass.
                ret = true;
            } else if (myiw.imageUpdate(img, info, x, y, w, h) == false) {
                // My referent has lost interest so clear it and ask
                // for a pruning pass to remove it later.
                myref.clear();
                ret = true;
            }

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                observer = i.next();
            } catch (ConcurrentModificationException e) {
                i = observers.iterator();
                continue;
            }
            observer.imageUpdate(this, imageState, x, y, width, height);
        }


    }


    private void forceToIntARGB(){

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                observer = i.next();
            } catch (ConcurrentModificationException e) {
                i = observers.iterator();
                continue;
            }
            observer.imageUpdate(this, imageState, x, y, width, height);
        }


    }


    private void forceToIntARGB(){

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