nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

ScriptRunner loadClass question

Derek Fields _RightStar_

I have a script structure that might look like this:

scripts/

  my_main_class.groovy

  my_class/

     my_class1.groovy
     my_class2.groovy

From "my_main_class", I want to instantiate either "my_class1" or "my_class2" depending on a variable.

I am trying use the following:

def cname = 'my_class1'
def a = this.getClass().classLoader.loadClass(cname)?.newInstance()

I get a java.lang.ClassNotFoundException: my_class1 error.

Clearly the CLASS_PATH is not finding this class. Does anyone know how to make this work?

I can instantiate the classes normally

import my_class.my_class1
def a = new my_class1()

Accepted answers

Derek Fields _RightStar_

Thanks to @Ram Kumar Aravindakshan _Adaptavist_ I relooked at my code and I found that by specifying the complete path, the classloader worked. The corrected code is

def cname = 'my_class.my_class1'
def a = this.getClass().classLoader.loadClass(cname)?.newInstance()

This successfully loads the class.

All comments

Ram Kumar Aravindakshan _Adaptavist_

Hi @Derek Fields _RightStar_,

Your import statement is incorrect.

When importing a class, you should only do:-

import my_class.my_class1

You must not add the file extension to the import statement. It should only contain the package name followed by the class name.

Please give it a try and let me know how it goes.

Thank you and Kind regards,

Ram

Derek Fields _RightStar_

Thanks - that was a typo when I was creating the sample. My code imports the class correctly. I don't think it has to do with the import statement. I think it has to do with the CLASS_PATH not covering subdirectories.

Derek Fields _RightStar_

Thanks to @Ram Kumar Aravindakshan _Adaptavist_ I relooked at my code and I found that by specifying the complete path, the classloader worked. The corrected code is

def cname = 'my_class.my_class1'
def a = this.getClass().classLoader.loadClass(cname)?.newInstance()

This successfully loads the class.

Daniel Garcia

In my experience you can have problems instantiating classes like this.

if you run this immediately after clear cache the classes won't be compiled

I've also seen issues where expected super class doesn't match super class of instantiated object.

Can I ask, why do you want to do this ?

I started investigating this approach because factories classes caused a big chain of compilation, which caused other problems

Welcome!

It looks like you're new here. Sign in or register to get started.

Quick Links

Find more posts tagged with

server

scriptrunner

jira

jira-server