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

Issue

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 initially downloaded a whole bunch of dependencies, and in the end it showed,

COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[INFO] 1 error

I am on ubuntu 13.04.

If there's anything you want me to tell you, let me know. Thanks.

EDIT

When I do echo $JAVA_HOME I get /usr/lib/jvm/java-7-openjdk-i386/

When I do mvn -version

I get,

Apache Maven 3.0.4
Maven home: /usr/share/maven
Java version: 1.7.0_25, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-7-openjdk-i386/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.8.0-26-generic", arch: "i386", family: "unix"

Also, I found out this problem faced by someone else. But I am not sure how to go about the solution that is specified?

Further edits.

kraken@kraken-Inspiron-1545:/usr/lib/jvm/java-7-openjdk-i386$ ls -l
total 12
drwxr-xr-x 2 root root 4096 Sep  9 10:44 bin
lrwxrwxrwx 1 root root   41 Jul  4  2013 docs -> ../../../share/doc/openjdk-7-jre-    headless
drwxr-xr-x 5 root root 4096 Oct 13  2013 jre
drwxr-xr-x 4 root root 4096 Oct 13  2013 man

Solution

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.

Answered By - Kraken
Answer Checked By - Pedro (JavaFixing Volunteer)