Java LinkedHashMap 键到 ArrayList

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时间:2020-08-13 05:58:23  来源:igfitidea点击:

LinkedHashMap keys to ArrayList

javaandroidarraylistlinkedhashmap

提问by stefana

What is the easiest way to add the keys of a LinkedHashMap to an ArrayList? I would like to increase performance by removing loops. Is there a more efficient way?

将 LinkedHashMap 的键添加到 ArrayList 的最简单方法是什么?我想通过删除循环来提高性能。有没有更有效的方法?

for(String key : map.keySet()){
    array.add(key);
}

采纳答案by Autocrab

List array = new ArrayList(map.keySet());