java8实现map遍历,map转list,list转map

  1. 遍历map

    map.forEach((k, v) -> System.out.println("key:value = " + k + ":" + v));

     

  2. map转list

    map.entrySet().stream().map(e -> new Person(e.getKey(),e.getValue())).collect(Collectors.toList());

     

  3. list转map

     Map<Integer, String> result1 = list.stream().collect(
                    Collectors.toMap(Hosting::getId, Hosting::getName));

     

    原文作者:ayoungyeah
    原文地址: https://blog.csdn.net/ayoungyeah/article/details/91491680
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