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  1. ,
    via Google Groups by Marcus Haebler

    Update "latest" to Java 8 on DockerHub.

  2. ,
    via GitHub by Athou

    You're using an older version of java with classes compiled for java7

Solutions on the web

via GitHub by ph1l
, 1 year ago
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.5.0:java (default-cli) on project signalk-java: An exception occured while executing the Java class. nz/co/fortytwo/signalk/server/SignalKServer : Unsupported major.minor version 52.0
via GitHub by miawaga
, 1 year ago
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:java (default-cli) on project crowd-radius-server: An exception occured while executing the Java class. net.wimpi.crowd.radius.Server
via GitHub by matthewfarwell
, 1 year ago
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project scalastyle_2.9.1: An exception occured while executing the Java class. org.scalastyle.Main
via Google Groups by superseed77, 1 year ago
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project test-spring-kie: An exception occured while executing the Java class. null
via Google Groups by Dev Steelorbis, 1 year ago
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project dfp-axis- examples: An exception occured while executing the Java class. null
via Stack Overflow by praneel
, 1 year ago
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project UAF: An exception occured while executing the Java class. com.shn.library.RunSuitesInParallel
java.lang.UnsupportedClassVersionError: nz/co/fortytwo/signalk/server/SignalKServer : Unsupported major.minor version 52.0	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:803)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)	at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:281)	at java.lang.Thread.run(Thread.java:745)