Maven error :Perhaps you are running on a JRE rather than a JDK?

Question

I\'ve never worked with Maven before and I am following the instructions here. When I run the command

mvn integration-test -Pamp-to-war

It

Answer 1

Apparently, it requires tools.jar file inside the lib folder of my $JAVA_HOME. I did not have the lib folder, so I reinstalled my jdk using command

apt-get install openjdk-7-jdk openjdk-7-doc openjdk-7-jre-lib

Also, this link may help some people.

Answer 2

For solving my issue on Linux don't have a JDK, I just download the JDK and upload to the Linux server, and type: tar xvf jdk-8u45-linux-x64.tar.gz

Answer 3

Here's my automatic solution...

This will follow your javac executable's symlink (setup by yum and/or alternatives --config java) backwards to find the JAVA_HOME. (Toss this in your in your /etc/profile):

export JAVA_HOME=$(readlink -f /usr/bin/javac | sed 's:/bin/javac$::')

If you wanted a stable path (refreshed on boot) launch something like this:

export JAVA_HOME=$(readlink -f /usr/bin/javac | sed 's:/bin/javac$::')
ln -sfn "${JAVA_HOME}" /usr/lib/jvm/jdk-current

I'm kinda shocked the latter still isn't baked into alternatives.

Answer 4

I was facing the same issue. I needed to place the JDK before the JRE in PATH in order to resolve.

Answer 5

This is how i fixed my problem

right clik on the project > properties > Java Compiler (select the one you are using)

it was 1.5 for me but i have 1.8 installed. so i changed it to 1.8.. and voilla it worked!.

Answer 6

I had the same issue after installing the java-1.8.0-openjdk package on an AWS Linux AMI. The incorrect assumption I made, was that because the file ended in openjdk it would be the jdk version. This is not the case.

The openjdk install page explains everything clearly.

The java-1.8.0-openjdk package contains just the Java Runtime Environment. If you want to develop Java programs then install the java-1.8.0-openjdk-devel package.

If you've already installed the java-1.8.0-openjdk package, just leave it and the JAVA_HOME value if it's working for the JRE and install the java-1.8.0-openjdk-devel package using yum install java-1.8.0-openjdk-devel -y.