如何向Varargs添加新元素？ [英] How to add new element to Varargs?

问题描述

我有一个方法

public boolean findANDsetText  (String Description, String ... extra ) {

我想调用另一种方法并传递它 extras 但是我想要为额外内容添加新元素（描述）。

inside I want to call another method and pass it extras but I want to add new element (Description) to extras.

     object_for_text = getObject(find_arguments,extra);

我怎样才能在java中做到这一点？代码会是什么样的？

How can I do that in java? What would the code look like?

我厌倦了来自这个问题但无法使其发挥作用。

I tired to accommodate code from this question but couldn't make it work.

推荐答案

额外的只是一个 String 数组。因此：

extra is just a String array. As such:

List<String> extrasList = Arrays.asList(extra);
extrasList.add(description);
getObject(find_arguments, extrasList.toArray());

您可能需要弄乱泛型类型 extrasList.toArray（） 。

You may need to mess with the generic type of extrasList.toArray().

你可以更快但更详细：

String[] extraWithDescription = new String[extra.length + 1];
int i = 0;
for(; i < extra.length; ++i) {
  extraWithDescription[i] = extra[i];
}
extraWithDescription[i] = description;
getObject(find_arguments, extraWithDescription);

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