字符串字符串数组JAVA铸造名单 [英] JAVA casting list of strings to string array

问题描述

我的工作从字符串列表创建的字符串数组。到目前为止，我有以下的code：

I am working on creating an array of strings from a list of strings. So far, I have the following code:

ArrayList<String> layerChoices = new ArrayList<>();
for(IFeatureLayer layer : layerList){
   layerChoices.add(layer.getName());
}
String[] choices = (String[])layerChoices.toArray();

问题在于toArray（）返回一个Object []，而不是一个字符串尝试转换为一个String []当它是生产类转换异常[]。有一个简单的方法来实现自己的目标比for循环中，我将通过Object []对象，投每个对象的字符串迭代，然后将每个字符串添加到一个String []等？好像很多工作，为一个简单的任务...

The issue being that toArray() returns an Object[] and not a String[] which is producing a class cast exception when trying to cast to a String[]. Is there a simple way to accomplish my goals other than a for loop in which I would iterate through the Object[] , cast each Object to a String, and then add each String to a String[]? Seems like a lot of work for a simple task...

推荐答案

使用它像这样 - 的String [] myArray的= myList.toArray（新的String [myList.size（）]）;

Use it like this - String [] myArray = myList.toArray(new String[myList.size()]);

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