package com.jingsong.test;
import cn.hutool.core.collection.CollUtil;
import java.util.Arrays;
import java.util.List;
public class CollectionTest {
public static void main(String[] args) {
List<String> list1 = Arrays.asList("aa", "aa", "cc");
List<String> list2 = Arrays.asList("aa", "dd", "ee");
System.out.println(CollUtil.isEmpty(list1));
System.out.println(CollUtil.union(list1,list2).size());
System.out.println(CollUtil.unionDistinct(list1,list2).size());
System.out.println(CollUtil.contains(list2, s -> "AA".equals(s.toUpperCase())));
}
}