package test;

import java.util.HashSet;

import java.util.Set;

public class Test {

    public static void main(String[] args) {

        Set<Integer> result = new HashSet<Integer>();

        Set<Integer> set1 = new HashSet<Integer>(){{

            add(1);

            add(3);

            add(5);

        }};

        Set<Integer> set2 = new HashSet<Integer>(){{

            add(1);

            add(2);

            add(3);

        }};

        result.clear();

        result.addAll(set1);

        result.retainAll(set2);

        System.out.println("交集："+result);

        result.clear();

        result.addAll(set1);

        result.removeAll(set2);

        System.out.println("差集："+result);

        result.clear();

        result.addAll(set1);

        result.addAll(set2);

        System.out.println("并集："+result);

    }

}