java 对比两个list 去重

以下是Java中对比两个List去重的方法：
1.使用Java 8 Stream API进行去重

List<String> list1 = new ArrayList<>(Arrays.asList("a", "b", "c"));
List<String> list2 = new ArrayList<>(Arrays.asList("b", "c", "d"));
List<String> result = Stream.concat(list1.stream(), list2.stream())
        .distinct()
        .collect(Collectors.toList());
System.out.println(result); // 输出：[a, b, c, d]

2.使用Java中的Set集合进行去重

List<String> list1 = new ArrayList<>(Arrays.asList("a", "b", "c"));
List<String> list2 = new ArrayList<>(Arrays.asList("b", "c", "d"));
Set<String> set = new HashSet<>(list1);
set.addAll(list2);
List<String> result = new ArrayList<>(set);
System.out.println(result); // 输出：[a, b, c, d]