JIRA - Create Custom Fields with Code

You can automatically create custom fields with code within your plugin for JIRA.
Here is an  example method to do this. This method creates four custom fields.

public void createAllCustomFields(){
        CustomFieldType fieldType = customFieldManager.getCustomFieldType("com.atlassian.jira.plugin.system.customfieldtypes:textfield");
        try {
            CustomField contactName = customFieldManager.createCustomField("Contact Name", "Name of the contact", fieldType , null, null, null);
            customFieldManager.createCustomField("Contact Surname", "Surname of the contact", fieldType , null, null, null);
            customFieldManager.createCustomField("Contact Phone", "Phone number of the contact", fieldType , null, null, null);
            customFieldManager.createCustomField("Contact Email", "Email address of the contact", fieldType , null, null, null);
        } catch (GenericEntityException e) {
       
            e.printStackTrace();
        }
        System.out.println("createAllCustomFields is called !!!!!!!!!!!!!!!!!!!!!");
    }