Exception in thread "main" java.lang.UnsupportedClassVersionError: edu/harvard/hul/ois/fits/Fits : Unsupported major.minor version 51.0

[Brad Spry]

Freshly cloned installation using:

git clone https://github.com/harvard-lts/fits.git

java -version

java version "1.6.0_45"

Java(TM) SE Runtime Environment (build 1.6.0_45-b06)

Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)

./fits.sh

Exception in thread "main" java.lang.UnsupportedClassVersionError: edu/harvard/hul/ois/fits/Fits : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

Could not find the main class: edu.harvard.hul.ois.fits.Fits.  Program will exit.

[Tyler Thorsted]

I get the same error as well.

java -version

java version "1.6.0_65"

Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)

Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)

[Brad Spry]

Tyler, could you post the detailed error output after running ./fits.sh?

<B

[Bjarne Andersen]

did you build the fits.jar yourself or did you just run fits.sh (which uses the fits.jar that is already in the git-repository) ?

looks like the fits.jar in the git-repo has been build with another java version (maybe java 7 ?)

building fits.jar from the sourcecode should always be the best solution (IMHO fits.jar should not be distributed in the source-code repository)

best

Bjarne Andersen

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[Tyler Thorsted]

./fits.sh -i RELEASE.txt 

Exception in thread "main" java.lang.UnsupportedClassVersionError: edu/harvard/hul/ois/fits/Fits : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)

at java.lang.ClassLoader.defineClass(ClassLoader.java:621)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

I seem to get the same error in fits 0.8.2 and 0.8.3

[Tyler Thorsted]

Bjarne,

Is there a help file somewhere which can help us compile the fits.jar on our system?

Thanks.

[Brad Spry]

Bjarne,

Your intuition is correct, I just ran fits.sh against the jar included from the git-repository...

Moving forward, from my local fits directory, I've now ran:

1. ant clean

2. ant compile

Now I can successfully run fits.sh:

./fits.sh -i RELEASE.txt -o RELEASE.txt.fits

...and get the desired result!

[Tyler Thorsted]

Thanks Brad!

[Dave Siegel]

The latest fits should be run under Java 7.

Thanks,

Dave