Unsupported major.minor version 51.0

[bostonaholic]

full stack trace here:

$ lein spec   
Exception in thread "main" java.lang.UnsupportedClassVersionError: speclj/main : 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)

my leiningen and java version:

$ lein version
Leiningen 2.1.2 on Java 1.6.0_45 Java HotSpot(TM) 64-Bit Server VM

The only thing I can come up with is from this other issue mmcgrana/clj-json#23

[slagyr]

This is likely a Java version mismatch. Are you by chance using Speclj version 2.6.0? That version was mistakenly compiled to a Java 1.7 target. And if you're running on a mac, Apple is still distributing Java 1.6. If this is the case, simply upgrade to Speclj 2.6.1. Otherwise, tell me more please.

On May 8, 2013, at 4:43 PM, Matthew Boston [email protected] wrote:

full stack trace here:

$ lein spec
Exception in thread "main" java.lang.UnsupportedClassVersionError: speclj/main : 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)
my leiningen and java version:

$ lein version
Leiningen 2.1.2 on Java 1.6.0_45 Java HotSpot(TM) 64-Bit Server VM
The only thing I can come up with is from this other issue mmcgrana/clj-json#23

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[bostonaholic]

Looks like I've got [speclj "2.7.0"] and yes, I am on a Mac with Java version 1.6.0_45.

[slagyr]

Wow! You're on the bleeding edge. I deployed that version only a couple hours ago.

Well, I'm not sure how that release got out with the wrong .class files. But rather than make release a new version, I've pushed an updated release of 2.7.0. If you delete your maven cache (see below) all should be well. Please let me know how it turns out.

clean maven cache of speclj 2.7.0...

rm -rf ~/.m2/repository/speclj/speclj/2.7.0/

On May 8, 2013, at 4:52 PM, Matthew Boston [email protected] wrote:

Looks like I've got [speclj "2.7.0"] and yes, I am on a Mac with Java version 1.6.0_45.

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[bostonaholic]

Awesome! Worked like a charm. Closing. Thanks, Micah.