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Former Member
May 26, 2007 at 02:44 AM

Invalid or Corrupt JAR file


Hi gurus,

I am new to Netweaver Developer Studio - in fact, I just installed it.

I am going through the "Creating your first J2EE Application" tutorial where you create a simple calculator.

I am having troubles at the point where I create the Java Archive. The JAR file seems to be created successfully but if I try to view the created archive, I get the message "Invalid or Corrupt jarfile <filename>".

I can proceed no further in the tutorial as the next stage is to code the proxy which, I am guessing, needs to address the objects created in the jar file.

I've seen some other forums about too recent versions of Java causing problems. I installed JavaSDK1.4.2_14 .... I think this should be okay?