You may use many plugins in Jenkins, and finding the code for those plugins to use in Jenkinsfile is sometimes challenging.
Declarative Directive Generator is helpful to generate the code to use in Jenkinsfile for most of the plugins and pipeline steps
You can generate code for both Scripted and Declarative Jenkisnfile
For Scripted Jenkinsfile use Snippet Generator and for Declarative Jenkisnfile use Declarative Directive Generator
Reference: Snippet Generator
How to go to Snippet Generator
In your Jenkins URL append path /pipeline-syntax E.g. https:jenkins.com/piepline-syntax
How to go to Declarative Directive Generator
In your Jenkins URL append path /directive-generator E.g. https:jenkins.com/directive-generator then click on Declarative Directive Generator
How to go to Declarative Directive Generator from Pipeline Page
From any pipeline page, you can click on Pipeline Syntax to go to Snippet Generator or Declarative Directive Generator
Generate code for cron triggers using Declarative Directive Generator
Go to your JENKINS_URL/directive-generator E.g. https:jenkins.com/directive-generator
Under Sample Directive choose triggers: Triggers from dropdown
Click on Add and choose cron: Build periodically
Enter the cron expression * * * * *
Click on the Generate Declarative Directive to generate the code
Copy the generated code
triggers {
cron '* * * * *'
}Generate code for tools block using Declarative Directive Generator
Choose tools: Tools from the dropdown under Sample Directive
Click on Add and choose maven: Maven
Click on the Generate Declarative Directive to generate the tools block code
Copy the generated code
tools {
maven 'maven-3.8.8'
}Generate code to trigger other pipelines using Declarative Directive Generator
This feature was available from scripted Jenkinsfile, so it needs to generate it from the Snippet Generator
Go to Snippet Generator, choose build: Build a job from Sample Step
Enter the child pipeline name 01-hello-world-java you want to trigger under Project to Build
Enable Wait for completion depends on your needs
Click on Generate Pipeline Script to generate the code to trigger the child pipeline
Copy the generated code
build '01-hello-world-java'Like this you can generate the Jenkinsfile code snippet for most of the plugin use cases