Problem: Applet Viewer says there's no applet tag on my HTML page, but it really is there:
Problem: I recompiled my applet, but my applet viewing application won't show the new version, even though I told it to reload it.
- Check whether you have a closing applet tag:
Problem: The light gray background of my applet causes the applet to flicker when it's drawn on a page of a different color.
- In many applet viewers (including browsers), reloading isn't reliable. This is why we recommend that you simply use the JDK Applet Viewer, invoking it anew every time you change the applet.
- If you get an old version of the applet, no matter what you do, make sure that you don't have an old copy of the applet in a directory in your CLASSPATH. See Roll Your Own Packages for information about the CLASSPATH environment variable.
Problem: The Applet
- You need to set the background color of the applet so that it works well with the page color. See Creating a GUI for details.
getImagemethod doesn't work.
Problem: Now that I've copied my applet's class file onto my HTTP server, the applet doesn't work.
- Make sure you're calling
initmethod or a method that's called after
getImagemethod does not work when it's called from a constructor.
Other problems that affect applets are discussed in the Creating a User Interface trail. Specifically, look at whichever of the following sections are related to your problem: Common Component Problems, Common Layout Problems, Common Graphics Problems.
- Does you applet define more than one class? If so, make sure that the class file (
ClassName.class) for each class is on the HTTP server. Even if all the classes are defined in one source file, the compiler produces one class file per class.
- Did you copy all the data files for your applet -- image and sound files, for example -- to the server?
- Make sure all the applet's class and data files can be read by everyone.