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I'm trying to call a methond on a Java class from a Groovy class. The Java method has a String array as a parameter, and I have a collection of Strings in my Groovy class. How do I convert the Groovy collection to a Java String array?
Java Method:
public class SomeJavaClass{ public void helpDoSomething(String[] stuff){ } } Groovy code
class SomeGroovyClass { def data = ["a", "b", "c"] def doSomething = { def javaClass = new SomeJavaClass() javaClass(data) //Groovy passes ArrayList, Java class expects String[] ??? } } 
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We can also convert String to String array by using the toArray() method of the List class. It takes a list of type String as the input and converts each entity into a string array.
Way 1: Using a Naive ApproachGet the string. Create a character array of the same length as of string. Traverse over the string to copy character at the i'th index of string to i'th index in the array. Return or perform the operation on the character array.
Java For Testers Now, use the toCharArray() method to convert string to char array. char[] ch = str. toCharArray();
To be correct, def data = ["a","b","c"] it is a List, not an array.
Just try casting like this:
def data = ["a","b","c"] as String[] If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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