When calling ResourceBundle.getBundle() in an applet running on Windows 95, I get the following error msgs even though it did find the resource bundle "MyBundle":
  File not found when looking for: MyBundle_en_US
  File not found when looking for: MyBundle_en

There should not have been any errors since the fallback resource bundle was successfully found. This causes confusion to the user. I have included a small test case that reproduces this problem in the attachment. You can run using just the java files manually or use the JWS project.

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###@###.### (Jan 10, 1998):

Similar problem reported for JDK116 by Toshiki Murata (###@###.###)
at Oki Electric Industry Co., Ltd. :

Unnecessary messages are issued when using ResourceBundle with appletviwer.
Please start MessageFormat in i18n demo of JDK demo.
    % cd /usr/local/JDK/demo/i18n/MessageFormat
    % appletviewer example1.html

If you change Locale menu, you find following messages:
File not found when looking for: ChoiceResource_da_DK
File not found when looking for: ChoiceResource_en_GB
File not found when looking for: ChoiceResource_ja_JP

These are unnecessary error messages.
In this demo, language only resources are provided,
but both language and country are not provided.
There is no problem.
But messages are shown.
These message should be only exception.

In this case (Resource searching),
various classes are tested.
So unexisting class names are tested.
And ClassNotFoundException is also raised.
I think errorMsg("filenotfound", name) at 525 line
in sun/applet/AppletClassLoader.java is unnecessary.