如何将Groovy String集合转换为Java String数组？ [英] How do I convert a Groovy String collection to a Java String Array?

问题描述

我正试图从Groovy类中调用Java类的方法。 Java方法将String数组作为参数，并且在Groovy类中有String的集合。如何将Groovy集合转换为Java String数组？

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方法：

public class SomeJavaClass{
  public void helpDoSomething(String[] stuff){

  }
}

Groovy代码

class SomeGroovyClass {
  def data = ["a", "b", "c"]

  def doSomething = {
    def javaClass = new SomeJavaClass()
    javaClass(data) //Groovy passes ArrayList, Java class expects String[] ???
  }
}

推荐答案

到是正确的， def data = [ a， b， c] 它是一个列表，而不是数组。

To be correct, def data = ["a","b","c"] it is a List, not an array.

只需尝试这样铸造：

def data = ["a","b","c"] as String[]

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