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    Look if your classpath is correct, and check if the versions of your libraries match the version you described in your pom.xml

Solutions on the web

via GitHub by teaforthecat
, 1 year ago
lux_data_io/IO (wrong name: lux_data_io/io)
via Stack Overflow by John S
, 10 months ago
io/netty/channel/CombinedChannelDuplexHandler
via Stack Overflow by user3697349
, 2 years ago
via Stack Overflow by user2976158
, 2 years ago
parser (wrong name: Attempt1/parser)
via Stack Overflow by Gihi
, 2 years ago
Thuisopdracht (wrong name: userinput/Thuisopdracht)
via Stack Overflow by Natalie Carr
, 2 years ago
PhoneticSearchPackage /PhoneticSearch (wrong name: phoneticSearchPackage/PhoneticSearch)
java.lang.NoClassDefFoundError: lux_data_io/IO (wrong name: lux_data_io/io)	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:800)	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$1.run(URLClassLoader.java:355)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)	at lux_data_io.println.(Unknown Source)	at program._.main(Unknown Source)