Maven根本不会跑

Question

My Environment variables are

JAVA_HOME = C:\Program Files\Java\jdk-10.0.2
M3_HOME = C:\Program Files\apache-maven-3.5.4
M3 = C:\Program Files\apache-maven-3.5.4
MAVEN_HOME = C:\Program Files\apache-maven-3.5.4
MAVEN_OPTS = C:\Program Files\apache-maven-3.5.4

My PATH Vars are

C:\Program Files\Java\jdk-10.0.1\bin
C:\Program Files (x86)\Common Files\Oracle\Java\javapath
C:\Program Files\apache-maven-3.5.4\bin
C:\Windows\System32

I ran java -verison and the output was

java version "10.0.2" 2018-07-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.2+13)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)

But when I run mvn --version

Error: Could not find or load main class C:\Program
Caused by: java.lang.ClassNotFoundException: C:\Program

Can someone please tell me why maven won't run

Answer 1

Don't set the MAVEN_OPTS to C:\\Program Files\\apache-maven-3.5.4 . Leave it empty.

This environment variable is meant to pass additional command line options to the JVM when it is running maven.