In Groovy, you can find the first element of an array by using the index notation and specifying the index of the first element, which is always zero. Here's an example:
def myArray = [5, 8, 2, 9, 1]
def firstElement = myArray[0] // access the first element in the array
println(firstElement) // prints 5
In this example, we define an array myArray and then access the first element by using myArray[0]. We assign this value to the variable firstElement and then print it using println(). The output is 5, which is the value of the first element in the array.
You can also use the first() method to get the first element of an array, like this:
def myArray = [5, 8, 2, 9, 1]
def firstElement = myArray.first()
println(firstElement) // prints 5
In this example, we define an array myArray and then use the first() method to get the first element. We assign this value to the variable firstElement and then print it using println(). The output is 5, which is the value of the first element in the array.