Maven Environment Setup Windows 7 error

Question

I want to learn more about JSF framework but its first step is to install MAVEN. I followed all the steps in installing Maven here . I've downloaded the file "apache-maven-3.3.3-bin.zip" here . When I open the command prompt and typed "mvn --version" I got the following error.

I've also set my environment variables on system variables panel.

The M2_HOME full directory is C:\\Program Files\\Apache Software Foundation\\apache-maven-3.3.3

and the JAVA_HOME directory C:\\Program Files\\Java\\jre1.8.0_51

And I checked also the version of JAVA I'm using.

Answer 1

Your global maven options (environment variable MAVEN_OPTS ) is invalid. You must separate the options with a space:

MAVEN_OPTS = -Xms256m -Xmx512m

Answer 2

通常，不需要添加MAVEN_OPTS但是在添加时必须在两个参数之间MAVEN_OPTS空格。

 MAVEN_OPTS=-Xms256m -Xmx512m