Groovy install on Unix OS - unix

Question

I want to install groovy on a unix server and test functionality. I used manual instructions from the following link:
https://itekblog.com/centos-groovy-installation-tutorial-newbs-centos-6-x/
I think the java jdk is installed, but im not certain since I didnt do it myself. I base my opinion on the following commands(i edited output with xxxs to obfuscate info):
[root#xxx groovy]# which java
/opt/xxx/xxx/bin/java
and
[root#xxx bin]# ll
total 48
lrwxrwxrwx. 1 root jdk8 29 Aug 10 2017 jar ->
/opt/xxx/jdk8/current/bin/jar
lrwxrwxrwx. 1 root jdk8 30 Aug 10 2017 java ->
/opt/xxx/jdk8/current/bin/java
lrwxrwxrwx. 1 root jdk8 29 Aug 10 2017 jps ->
/opt/xxx/jdk8/current/bin/jps
lrwxrwxrwx. 1 root jdk8 32 Aug 10 2017 jstack ->
/opt/xxx/jdk8/current/bin/jstack
lrwxrwxrwx. 1 root jdk8 31 Aug 10 2017 jstat ->
/opt/xxx/jdk8/current/bin/jstat
lrwxrwxrwx. 1 root jdk8 33 Aug 10 2017 keytool ->
/opt/xxx/jdk8/current/bin/keytool
Here is my bash_profile:
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
export GROOVY_HOME=/usr/groovy/groovy-2.5.1
PATH=$PATH:$HOME/bin:$GROOVY_HOME/bin
export PATH
I "reloaded" my profile:
source ~/.bash_profile
Here is what happens when I try to "run" groovy:
[root#lhost-cl2 groovy]# groovy -e 'println("Hello, World!")'
Exception in thread "main" java.lang.ClassFormatError:
org.codehaus.groovy.tools.GroovyStarter (unrecognized class file version)
at java.lang.VMClassLoader.defineClass(libgcj.so.10)
at java.lang.ClassLoader.defineClass(libgcj.so.10)
at java.security.SecureClassLoader.defineClass(libgcj.so.10)
at java.net.URLClassLoader.findClass(libgcj.so.10)
at java.lang.ClassLoader.loadClass(libgcj.so.10)
at java.lang.ClassLoader.loadClass(libgcj.so.10)
at gnu.java.lang.MainThread.run(libgcj.so.10)
Suggestions?

Answer 1

There were two versions of java installed on the server. The older version, not compatible with groovy, was being referenced. I updated the path and its happy now.