Hello World Error

Hi,

Have just tried the HelloWorld java example and I don't understand the error I am getting when launching LS.
Any idea?

jag

Code:

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04.Nov.08 22:27:51,484 <ERROR> Data adapter HELLOWORLD.DEFAULT init error
java.lang.UnsupportedClassVersionError: Bad version number in .class file
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at com.lightstreamer.a.wb.loadClass(wb.java)
        at com.lightstreamer.g.z.c(z.java)
        at com.lightstreamer.g.z.a(z.java)
        at com.lightstreamer.g.z.b(z.java)
        at com.lightstreamer.g.g.a(g.java)
        at com.lightstreamer.a.p.run(p.java)
04.Nov.08 22:27:51,501 <ERROR> Error while loading the Adapters
java.lang.Exception: Unexpected error
        at com.lightstreamer.g.z.a(z.java)
        at com.lightstreamer.g.z.b(z.java)
        at com.lightstreamer.g.g.a(g.java)
        at com.lightstreamer.a.p.run(p.java)
Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at com.lightstreamer.a.wb.loadClass(wb.java)
        at com.lightstreamer.g.z.c(z.java)
        ... 4 more

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Hi Jaguarg,

that's the kind of error shown when you try to run a class compiled with a certain version of java on an older virtual machine.

Can you check which is yours virtual machine version and which target version are you compiling for?

See in example this thread: http://forums.sun.com/thread.jspa?th...art=0&tstart=0

sorted. exactly that. I just changed the target compiler in eclipse and all good now.

cheers

jag