CODEWITHSUNDEEP
groovy
Deb
Deb

Reputation: 2972

Installing Groovy

Recently I downloaded Groovy-2.3.6 and try to install it on Linux system. I follow the instruction from http://groovy-lang.org/install.html. I set my GROOVY_HOME variable.

export GROOVY_HOME=/home/work/Software/groovy-2.3.6

Then I set my environment path variable to the Groovy bin folder

  export PATH=$PATH:/home/work/Software/groovy-2.3.6/bin

The JAVA_HOME variable is already created.

Now when I'm trying to run any command of Groovy, It generate following error

Exception in thread "main" java.lang.NoClassDefFoundError: org/codehaus/groo/tool/GroovyStarter
Caused by: java.lang.ClassNotFoundException: org.codehaus.groovy.tools.GroovyStarter
      at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: org.codehaus.groovy.tools.GroovyStarter.  Program will exit.

I was going through some website to solve that problem. I find that if I set wrong path to GROOVY_HOME then it can happen. I can't figure out what should be the right path for that variable. Can anyone help me with this please. Thanks

Upvotes: 8

Views: 32570

Answers (9)

Chamdarig Dall
Chamdarig Dall

Reputation: 1

all commands below failed:

export GROOVY_HOME='/Library/groovy4012'
export PATH=$PATH:/Library/groovy4012/bin
groovy
groovy -v
export PATH=$PATH:/Library/groovy4012/
groovy -v
export PATH=$PATH:/Library/groovy4012
groovy -v
export PATH=$GROOVY_HOME/bin:$PATH
groovy -v

but after this, I tried a different approach

cd /Library/groovy4012/bin
./groovysh

and worked :)

btw it's funny that nobody can explain how the manual installation on Linux/MacOS should be done properly

Upvotes: 0

Evan Hu
Evan Hu

Reputation: 1017

I met the same problem in windows os. I finally found this page and thanks to the author I solved my problem. In short, don't set GROOVY_HOME env var. Use something else e.g. GROOVY_DIR and then set %GROOVY_DIR%\bin in PATH. Boom! Groovy is working now.

Upvotes: 0

Gi0rgi0s
Gi0rgi0s

Reputation: 1877

I had the same error message and found out after much trial and error, the GROOVY_HOME variable was not set correctly.

The groovy application relies on the GROOVY_HOME path pointing to the correct directory, or else you will see the error above.

I see an answer above that recommends removing periods from the directory name and adding it to the path. This will work but could be done in a cleaner way using a symlink.

Follow the link below or follow my summary:

https://www.packtpub.com/mapt/book/All%20Books/9781849519366/1/ch01lvl1sec11/Installing+Groovy+on+Linux+and+OS+X

  1. Create a symlink named current that points to the main groovy directory (e.g. /usr/share/groovy/groovy-2.1.6). The symlink could be located in the same directory that holds the groovy-x.y.z directory. This approach has the advantages of avoiding invalid characters in PATH and it can be redirected to a new version of groovy after an upgrade. Here is an example that assumes groovy is installed in /usr/share/groovy/ and groovy version 2.1.6.

    sudo ln -s /usr/share/groovy/groovy-2.1.6 current

  2. Use the new symlink to define the GROOVY_HOME variable in the login script (e.g. .profile):

    export GROOVY_HOME=/usr/share/groovy/current

  3. Add GROOVY_HOME/bin to the PATH variable in the login script:

    export PATH=$GROOVY_HOME/bin:$PATH

  4. NOTE: It's best to log out and log in before testing to ensure the initialization script sets the environment variables properly

    Test by executing groovy -v

I hope this works well for whomever stumbles upon this link.

Upvotes: 0

entomo
entomo

Reputation: 414

On Ubuntu-based distros (you appear to be using something unix-y), sudo apt install groovy.

Upvotes: 0

Dónal
Dónal

Reputation: 187369

The simplest way to install Groovy on Linux/Mac is with SDKMAN. Here's what I suggest:

  • undo everything you've already done
  • install SDKMAN by running curl -s "https://get.sdkman.io" | bash
  • open a new terminal and install groovy with the command sdk install groovy 2.3.6

Going forward you can use SDKMAN to switch between different versions of Groovy (and Gradle, Grails, Griffon, etc.), install new versions, remove old versions, and so on.

Upvotes: 23

MesamH
MesamH

Reputation: 101

Try changing your path by deleting the "\bin" i got rid of that and it worked perfectly for me.

Upvotes: 0

kalyani chaudhari
kalyani chaudhari

Reputation: 7849

On Windows ::

  1. Download latest version of groovy from http://groovy.codehaus.org/Download
  2. unzip tar file (for e.g c:\groovy)

  3. set environment variables: a] GROOVY_HOME to your groovy directory(for e.g C:\groovy\groovy-2.4.6). b] JAVA_HOME to JRE

  4. Make sure that both GROOVY_HOME/bin and JAVA_HOME/bin are available in your PATH

Now you can run your groovy code successfully (for e.g groovy hello.groovy)

Upvotes: 1

LKing
LKing

Reputation: 49

I had this same issue recently when using groovy-2.0.8. I'm not sure whether my groovy-2.0.8 binary was corrupt or whether version 2 introduced something fundamentally different but, when I set groovy-1.8.9 to my path I no longer got the error when attempting to run a groovy script.

I also found the answer above stating that you cannot have "hyphens or periods" as misleading and incorrect.

Upvotes: 0

Yetti
Yetti

Reputation: 1720

Although I agree the GVM solution is likely the correct way to go, I believe the specific issue you were running into was an extension of the bug that prevents you from having a space in the install path (and the GROOVY_HOME variable); You also can't have hyphens or periods in the path.

So, you would need something like:

export GROOVY_HOME=/home/work/Software/groovy236

This pattern holds true Windows as well.

Upvotes: 2

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