Unable to install Maven on Windows: “JAVA_HOME is

Question

I followed the Maven tutorial to the letter but I still can't get Maven installed on Windows.

When I run the following in command prompt:

E:\Documents and Settings\zach>mvn --version

I get:

'mvn' is not recognized as an internal or external command, operable program or batch file.

I navigated to the maven install folder and ran mvn --version and got:

E:\java resources\apache-maven-2.2.0\bin>mvn --version
ERROR: JAVA_HOME is set to an invalid directory.
JAVA_HOME = "E:\Sun\SDK\jdk\bin"
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation

but when I run java -version I get:

java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode)

So I do have Java installed. Anyone know what the problem is?

Answer 1

After lot of failed tried attempts ,I found the solution

It was the ";" at end of JAVA_HOME which I always put at end of each new variable I set. So get rid of the ;.

JAVA_HOME set it in User Variable also (without the ";" ofcourse)

Answer 2

Sometimes in Windows whitespaces in paths are not recognized correctly

If you have a path problem and path seems like

c:\Program Files\....

try changing it in an old DOS format like

"C:\Progra~1\...

You can use dir /x to check correct syntax (third column)

C:\>dir /x ... 11.01.2008 15:47 <DIR> DOCUME~1 Documents and Settings 01.12.2006 09:10 <DIR> MYPROJ~1 My Projects 21.01.2011 14:08 <DIR> PROGRA~1 Program Files ...

In my pc JAVA_HOME is (and it works)

"C:\Progra~1\Java\jdk1.8.0_121"

Tested in Windows 10

Answer 3

My situation was a bit different.

• JAVA_HOME was set properly to point to 1.7
• Other Maven projects were working/building fine with 1.7 features.
• PATH was set properly.
• Everything was up-to-date.

Still my simple new Maven project was not working. What I noticed was the difference in the logs when I ran mvn clean install. For my older Maven projects, it showed

[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ oldProject---

But for my new project it showed:

[INFO] --- maven-compiler-plugin:2.0.2:compile (default-compile) @ newProject ---

So, I looked at the POM.xml and noticed this thing in the old project's POM:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.3.2</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>

Basically, this plugin tells which compiler version to use for compilation. Just added it to the new project's POM.xml and things worked.

Hope it is useful to someone.

Answer 4

you should set JAVA_HOME or MAVEN_HOME without bin directory for example: - JAVA_HOME=C:\Program Files (x86)\Java\jdk1.7.0_45 - MAVEN_HOME=C:\Program Files (x86)\apache-maven-3.1.1 now path=.....;%MAVEN_HOME%\bin;%JAVA_HOME%\bin it's work correctly