将LinkedHashSet转换为ArrayList或仅使用ArrayList

import java.util.LinkedHashSet;
import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        LinkedHashSet<String> linkedHashSet = new LinkedHashSet<>();
        linkedHashSet.add("A");
        linkedHashSet.add("B");
        linkedHashSet.add("C");

        ArrayList<String> arrayList = new ArrayList<>(linkedHashSet);

        System.out.println(arrayList); // 输出: [A, B, C]
    }
}

LinkedHashSet<String> linkedHashSet = new LinkedHashSet<>();
linkedHashSet.add("A");
linkedHashSet.add("B");
linkedHashSet.add("C");

ArrayList<String> arrayList = new ArrayList<>(linkedHashSet);

// 确保没有 null 元素
assert !arrayList.contains(null);

import java.util.stream.Collectors;

LinkedHashSet<String> linkedHashSet = new LinkedHashSet<>();
// 假设 linkedHashSet 已经被填充了大量数据

ArrayList<String> arrayList = linkedHashSet.stream()
                                          .collect(Collectors.toCollection(ArrayList::new));