java.lang.NoClassDefFoundError

javax/mail/Authenticator

Samebug tips5

This error means there's a class missing in your classpath during runtime. You need to create a jar with all your dependencies and have it in your classpath. Check Maven Assembly Plugin and how to add your dependencies to a jar: https://goo.gl/U2zr8k

I had to build one fat jar that will include all dependencies from the other jars that i wanted to use.

Don't give up yet. Our experts can help. Paste your full stack trace to get a solution.

Solutions on the web3947

  • via Atlassian JIRA by Jens Grassel, 1 year ago
    javax/mail/Authenticator
  • javax/mail/Authenticator
  • via Oracle Community by 807555, 11 months ago
    javax/mail/Authenticator
  • Stack trace

    • java.lang.NoClassDefFoundError: javax/mail/Authenticator at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.privateGetMethodRecursive(Class.java:3048) at java.lang.Class.getMethod0(Class.java:3018) at java.lang.Class.getMethod(Class.java:1784) at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526) Caused by: java.lang.ClassNotFoundException: javax.mail.Authenticator at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 7 more

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