ArrayList的＆LT;串GT;到的CharSequence [] [英] ArrayList<String> to CharSequence[]

问题描述

什么是最容易的方式的CharSequence [] 出的ArrayList＆LT的;弦乐＆GT; ？

What would be the easiest way to make a CharSequence[] out of ArrayList<String>?

当然，我可以通过每个的ArrayList 项目迭代并复制到的CharSequence 阵列，但也许有更好的/更快方法是什么？

Sure I could iterate through every ArrayList item and copy to CharSequence array, but maybe there is better/faster way?

推荐答案

您可以使用<一个href=\"http://java.sun.com/javase/6/docs/api/java/util/List.html#toArray%28T%5b%5d%29\"><$c$c>List#toArray(T[])这一点。

You can use List#toArray(T[]) for this.

CharSequence[] cs = list.toArray(new CharSequence[list.size()]);

这里有一个小演示：

Here's a little demo:

List<String> list = Arrays.asList("foo", "bar", "waa");
CharSequence[] cs = list.toArray(new CharSequence[list.size()]);
System.out.println(Arrays.toString(cs)); // [foo, bar, waa]

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