maven: Error: Could not find or load main class...Caused by: java.lang.ClassNotFoundException:...

 

>PROBLEM

Attempt to run a mvn command, for instance:

  mvn -version

  

Returns:

  <!--Could not find or load main class ...

  Caused by: java.lang.ClassNotFoundException: ...-->

>SOLUTION

Check your envvars (environment variables).

The configuration shall be something like this:

M2_HOME = C:\apache-maven

MAVEN_OPTS=-Xms256m -Xmx512m

Path=%Path%;%M2_HOME%\bin

For some mistake, you may have a misconfiguration. For example:

***WRONG:

MAVEN_OPTS=-%M2_HOME%\bin

>ENV

Windows 10

apache-maven

@CTL: y;faq-Error: Could not find or load main class...Caused by: java.lang.ClassNotFoundException:<memo<maven;.