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javaeclipsejarappletmanifest

Invalid Header Field Name when adding manifest to JAR using Eclipse

I'm using eclipse to develop a java applet and need to add an external jar to Class-Path in the manifest. I created the manifest file using notepad, used UTF-8 encoding and added the line break at the end, but attempting to add even a simple example manifest during jar creation results in the following error from Eclipse.

invalid header field name: ï>¿Manifest-Version
invalid header field name: ï>¿Manifest-Version

I have a feeling that it's some simple configuration issue, but I can't figure out what.

To test it, my manifest consists of the single line 

Manifest-Version: 1.0
Solution

  • Notepad save your file with a special mark named 'BOM' at the beginning : 2 bytes (U+FEFF) which identify UTF-8 format.

    You have to edit the file with Notepad++ (or vi) and encode it as UTF-8 (without BOM).

    Next steps to make JARs: