java.lang.ClassFormatError: This JVM does not support constant tag 15 in class file

[Rémi Forax]

On 01/06/2011 02:55 PM, Marcos Antonio wrote:
> Hello, all!
>
> I set up this simple code to test method references:
>
> public static int comp(Integer i1, Integer i2)
> {
>      return i1 - i2;
> }
>
> Integer[] ints = {1, 2};
> Arrays.sort(ints, GerenciadorAutorizacao#comp);
>
> The compilation is fine but running the application produces this error:
>
> Exception in thread "AWT-EventQueue-0" java.lang.ClassFormatError: This JVM does not support constant tag 15 in class file br/desenvolvimento/iu/Sistema$GerenciadorAutorizacao
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(Unknown Source)
> at java.security.SecureClassLoader.defineClass(Unknown Source)
> at java.net.URLClassLoader.defineClass(Unknown Source)
> at java.net.URLClassLoader.access$100(Unknown Source)
> at java.net.URLClassLoader$1.run(Unknown Source)
> at java.net.URLClassLoader$1.run(Unknown Source)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> at br.desenvolvimento.iu.Sistema$2.run(Unknown Source)
> at java.awt.event.InvocationEvent.dispatch(Unknown Source)
> at java.awt.EventQueue.dispatchEvent(Unknown Source)
> at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
> at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
> at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
> at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
> at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
> at java.awt.EventDispatchThread.run(Unknown Source)
>
> Am I missing something? I'm using JDK 7 b123 with the latest lambda updates.
>
> Thank you.
>
> Marcos 		 	   		
>

Currently the support in the VM is experimental, some you have to run 
with these flags:
java -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic ...

Rémi