java.lang.NoClassDefFoundError: io/netty/util/concurrent/DefaultPromise$1

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Samebug tips

,
Expert tip

A few things cause this exception:
1) Check if you have all jars and if they're in the correct path.
2) Your classpath might be broken, you can define it in the command line with java -cp yourClassPath or at your IDE if you're using one.

,

you can change your scala version to 2.11.11

Solutions on the web

via GitHub by thheller
, 1 year ago
io/netty/util/concurrent/DefaultPromise$1
via GitHub by Maskime
, 11 months ago
io/netty/util/concurrent/DefaultPromise$1
via Stack Overflow by Karim Ahmed
, 1 year ago
io/netty/util/concurrent/DefaultPromise$2 13:56:22,748 ERROR [stderr] (Thread-8 (ActiveMQ-client-netty-threads-805579002))
via GitHub by darkfrog26
, 8 months ago
io/netty/util/concurrent/DefaultPromise$1
via GitHub by Unisay
, 1 year ago
io/netty/util/concurrent/DefaultPromise$2
java.lang.NoClassDefFoundError: io/netty/util/concurrent/DefaultPromise$1
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:580)
at io.netty.util.concurrent.DefaultPromise.setSuccess(DefaultPromise.java:398)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:781)
at java.lang.Thread.run(Thread.java:745)

Users with the same issue

6 times, 24 minutes ago
1415 times, 15 hours ago
Once, 20 hours ago
3 times, 1 day ago
Once, 1 day ago

Write tip

Know the solutions? Share your knowledge to help other developers to debug faster.