Failed to load Main-Class manifest attribute

[Google Code Exporter]

What steps will reproduce the problem?
java -jar tcpmon-1.1.jar

1.
2.
3.

What is the expected output? What do you see instead?

Failed to load Main-Class manifest attribute from
tcpmon-1.1.jar


What version of the product are you using? On what operating system?
1.1

Please provide any additional information below.

Original issue reported on code.google.com by [e-mail] on 25 May 2011 at 3:48

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Same problem here, Windows 7, 32 bit, java 1.6.0_25-b06

Original comment by [e-mail] on 26 May 2011 at 4:22

[Google Code Exporter]

I get the same issue, Windows 7, Java 1.6.0_23-b05 (on a Mac running Parallels).

This happens when I run from commandline (as described above) and also when 
double-clicking on the JAR.

Original comment by [e-mail] on 31 May 2011 at 4:34

[Google Code Exporter]

Same issue being faced on Windows 7.

"Failed to load Main-Class manifest attribute from ..\tcpmon-1.1.jar"

Original comment by [e-mail] on 31 May 2011 at 4:57

[Google Code Exporter]

same issue , windows xp SP3 

Original comment by [e-mail] on 9 Jun 2011 at 10:15

[Google Code Exporter]

Had this issue on Win 7 64-bit and is resolved by rebuilding the jar file to 
specify the main class with e option.
1) Extract the jar to tcpmon-1.1
2) cd tcpmon-1.1
3) jar cfe tcpmon.jar com.codegoogle.tcpmon.MainWindow 
com/codegoogle/tcpmon/*.class

Original comment by [e-mail] on 10 Jun 2011 at 9:34

[Google Code Exporter]

Same problem, on Windows XP SP3 32bits, Java 1.6.0_24:

java -jar tcpmon-1.1.jar
Failed to load Main-Class manifest attribute from
tcpmon-1.1.jar

Original comment by [e-mail] on 15 Jun 2011 at 1:23

[Google Code Exporter]

Windows 7 32 bit

$ /c/glassfish3/jdk/bin/java -jar tcpmon-1.1.jar
Failed to load Main-Class manifest attribute from
tcpmon-1.1.jar

Original comment by [e-mail] on 17 Jun 2011 at 6:43

[Google Code Exporter]

Thanks to Comment 5 ([e-mail]) - your instructions on rebuilding 
the jar worked.

Original comment by [e-mail] on 17 Jun 2011 at 9:59

[Google Code Exporter]

You can run it also this way: java -cp tcpmon-1.1.jar 
com.codegoogle.tcpmon.MainWindow
(Windows 7 64b, Java 1.5.0_22)

Original comment by [e-mail] on 1 Jul 2011 at 11:28

[Google Code Exporter]

java -cp tcpmon-1.1.jar com.codegoogle.tcpmon.MainWindow

The above command line works (Windows XP SP3, J2RE 1.5.0 IBM J9 2.3),
but... Can someone at Google put Main-Class attribute back to the Manifest, 
please?

Original comment by [e-mail] on 22 Aug 2011 at 4:09

[Google Code Exporter]

This has been fixed in rev 03c045bd737a.

Original comment by [e-mail] on 29 Aug 2011 at 1:01

• Changed state: Fixed

[Google Code Exporter]

Issue 11 has been merged into this issue.

Original comment by [e-mail] on 29 Aug 2011 at 1:02

[Google Code Exporter]

ok got the same problem but using 1.4, on win 7 64 

Original comment by [e-mail] on 21 Oct 2011 at 2:48

[Google Code Exporter]

Same problem on Vista 32 and Java 6.

but the method of the comment #5 solved it.

Original comment by [e-mail] on 1 Dec 2011 at 2:48

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i don't understand what comment 5 was saying.

could you dumb it down a bit?

Original comment by [e-mail] on 25 Dec 2011 at 11:28

[Google Code Exporter]

Thanks Comment 5.

This comment allows to re-create a valid executable jar file. It needs a 
command prompt with Java binary in the path.

Original comment by [e-mail] on 29 Nov 2012 at 5:40

[Google Code Exporter]

Comment #9 worked for me! Thanks a lot!

Original comment by [e-mail] on 28 Nov 2013 at 10:10