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  1. Jenkins
  2. JENKINS-6612

Bad version number in .class file - Hudson cannot be run on Java 1.5 (JmDNS 3.1.6 probably requires Java 1.6)

    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: Major Major
    • core
    • None

      Hello. Upgraded today (1.359) and got "Bad version number in .class file". It's on:

      // DNSMultiCast.(DNSMultiCast.java:24):
      
                  this.jmdns = JmDNS.create();
      

      Probably jmdns requires Java 1.6 and so Hudson cannot be run on Java 1.5.

      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 winstone.classLoader.WebappClassLoader.loadClass(WebappClassLoader.java:68)
      	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
      	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
      	at hudson.DNSMultiCast.(DNSMultiCast.java:24)
      	at hudson.model.Hudson.(Hudson.java:628)
      	at hudson.model.Hudson.(Hudson.java:545)
      	at hudson.WebAppMain$2.run(WebAppMain.java:222)
      

          [JENKINS-6612] Bad version number in .class file - Hudson cannot be run on Java 1.5 (JmDNS 3.1.6 probably requires Java 1.6)

          dirkh added a comment -

          I get the same error with the sun jdk 1.6.0_20.

          dirkh added a comment - I get the same error with the sun jdk 1.6.0_20.

          Valgoerad added a comment -

          Commenting multicast out (source and dependency) makes it usable again.

          So, if you don't need multicast, just go ahead and make those modifications (diff attached).

          Remember to put core/target/hudson-core-*.jar into the hudson.war/WEB-INF/lib, though (overwrite it). Mvn package puts another version (probably from remote repos).

          Valgoerad added a comment - Commenting multicast out (source and dependency) makes it usable again. So, if you don't need multicast, just go ahead and make those modifications (diff attached). Remember to put core/target/hudson-core-*.jar into the hudson.war/WEB-INF/lib, though (overwrite it). Mvn package puts another version (probably from remote repos).

          sbouchet added a comment -

          Got also this error with sun-jdk-1.5.0_14 ... ( downgrading to 1.358 make it work again )

          sbouchet added a comment - Got also this error with sun-jdk-1.5.0_14 ... ( downgrading to 1.358 make it work again )

          Will be fixed in 1.360.

          Kohsuke Kawaguchi added a comment - Will be fixed in 1.360.

          Fixed in 1.360.

          Kohsuke Kawaguchi added a comment - Fixed in 1.360.

            Unassigned Unassigned
            valgoerad MichaƂ Minicki
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              Created:
              Updated:
              Resolved: