1.Map-computer方法

package com.enterprise.map;


import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import lombok.extern.slf4j.Slf4j;

import java.util.List;
import java.util.Map;

@Slf4j
public class MapComputer {
    public static void main(String[] args) {
        computerTest();
    }

    public static void computerTest() {
        Map map = Maps.newHashMap();
        List words = Lists.newArrayList(1L, 2L);
        words.forEach(word -> {
            
            map.compute(3, MapComputer::test2);
        });
        log.info("n" + map);
    }

    public static Integer test2(Object o, Integer integer) {
        return 1;
    }


}