Jenkins Pipeline Input Dropdown

Jenkins Pipeline Input Dropdown

    // Change `url` value to your own
    def inputParams=new URL('http://maven.com/sefs/sefs-scm.txt').text    
    
    // Change `message` value to the message you want to display
    // Change `description` value to the description you want
    def selectedProperty = input( id: 'userInput', message: 'Choose properties file', 
        parameters: [ [
          $class: 'ChoiceParameterDefinition', 
          choices: inputParams, 
          description: 'Properties', 
          name: 'prop'] ])
    
    println "Property: $selectedProperty"
    
    // Change `job` value to your downstream job name
    // Change `name` value to the name you gave the string parameter in your downstream job

====> JAVA
https://github.com/jenkinsci/jenkins/blob/master/core/src/main/java/hudson/model/ChoiceParameterDefinition.java#L20

 @DataBoundConstructor
    public ChoiceParameterDefinition(String name, String choices, String description) {
        super(name, description);
        this.choices = Arrays.asList(choices.split(CHOICES_DELIMITER));
        defaultValue = null;
    }

The input string must be one string with CRLF's to get things split out

"debug\nrelease\ndev",