java - 拆分字符串行列表并将单词添加到新列表中

Question

这个问题已经有答案了:

How can I turn a List of Lists into a List in Java 8? (12 个回答)

已关闭 3 年前。

我对下面的代码不太满意，但我不知道如何以更有效的方式实现它。

    List<String> words = new ArrayList<String>();
    for (String line : newList) {
        String[] lineArray = line.split(" ");
        for (String l : lineArray) {
            words.add(l);
        }
    }

Answer 1

一种优雅的方式如下:

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] argv) throws Exception {
        List<String> newList = List.of("Amitabh Bachchan", "James Bond", "Kishore Kumar", "Arvind Kumar Avinash");
        List<String> words = newList.stream().flatMap(s -> Arrays.stream(s.split(" "))).collect(Collectors.toList());
        System.out.println(words);
    }
}

输出:

[Amitabh, Bachchan, James, Bond, Kishore, Kumar, Arvind, Kumar, Avinash]