ArrayList<String>到字符序列[] [英] ArrayList<String> to CharSequence[]
本文介绍了ArrayList<String>到字符序列[]的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
从 ArrayList 生成 CharSequence[] 的最简单方法是什么?
What would be the easiest way to make a CharSequence[] out of ArrayList<String>?
当然我可以遍历每个 ArrayList 项目并复制到 CharSequence 数组，但也许有更好/更快的方法?
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 List#toArray(T[]) 为此.
You can use List#toArray(T[]) for this.
CharSequence[] cs = list.toArray(new CharSequence[list.size()]);
这是一个小演示:
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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