Java Glossary : reloading images

Java definitions: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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reloading images

In your browser hitting Reload should reload a page. However, it will often get an old version of an image, if that image's expiry time has not past. You can force it to get a new image with Shift-Reload or Control-Reload.

It would be nice to be able to do the same thing with Applets, but I have found only exiting and restarting the browser works. This is because the underlying JVM is not designed to let you unload or replace class files. You can get the effect programmatically by using a new ClassLoader. Then you may have both versions of the class in RAM.

In Java programming, the URLConnection.setUseCaches(false)) can force reloading. I have not yet found a simple way to force Toolkit.getDefaultToolkit().getImage( url ) to get a fresh copy. I found that Image.flush does not work. It seems to flush only the Image cache, not other intermediate sources.

reloading class files

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