In Groovy, a list is an ordered collection of elements. It is similar to an array in other programming languages. A list allows you to store and retrieve elements in a specific order. To check if a list is empty in Groovy, you can use the isEmpty()
method. Here's an example:
Check if List is Empty in Groovy Examples
def list = [] if (list.isEmpty()) { println "list is empty" } else { println "list is not empty" }
This code checks if the list list
is empty. Since we initialize the list with an empty list literal ([]
), the list is empty. Therefore, the code will print "list is empty
".
Here's another example that shows how to check if a list is empty after adding some elements to it:
def list = [] list << "element1" list << "element2" if (list.isEmpty()) { println "list is empty" } else { println "list is not empty" }
In this code, we add two elements to the list using the <<
operator. Since the list is not empty after adding the elements, the code will print "list is not empty
".