Why jersey-server.jar is a broken archive?

This is what I'm doing:

$ wget wget --no-check-certificate --quiet \
https://repository.jboss.org/nexus/content/groups/public/com/sun/jersey/jersey-server/1.4/jersey-server-1.4.jar
$ tar tf jersey-server-1.4.jar
META-INF/MANIFEST.MF
META-INF/
tar: Bad ZIP file: Unexpected end-of-entry record
tar: Error exit delayed from previous errors.

Is it my mistake or a problem with the file in JBoss repo开发者_JAVA百科sitory?

ps. The same story at this URL: http://download.java.net/maven/2/com/sun/jersey/jersey-server/1.4/jersey-server-1.4.jar

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A JAR file is a form of ZIP file, not a TAR file. Use the unzip command to unpack it. Or better still, use the jar utility from your Java installation.

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Try another location, actually I'm using :

wget http://download.java.net/maven/2/com/sun/jersey/jersey-server/1.4/jersey-server-1.4.jar

I've just tried it is correct