Java8 : Create list of object using enum value

Question

我有一个这样的枚举列表:

public enum Fruit {
   Apple,
   Mango,
   Banana,
   kiwi
}

我有这样的课

public class FruitShop {
    private String name;

    public FruitShop(String name) {
       this.name = name
}

我想创建一个 FruitShop 类的对象列表，将每个枚举作为参数传递

List<FruitShop> shoplists = new new ArrayList<>()
shoplists.add(Fruit.Apple.name())
shoplists.add(Fruit.Mango.name())
shoplists.add(Fruit.Banana.name())
shoplists.add(Fruit.kiwi.name())

如何使用 java8 流实现此目的？

Answer 1

您可以像这样将 EnumSet 与 stream 一起使用:

List<FruitShop> shoplists = EnumSet.allOf(Fruit.class).stream()
        .map(f -> new FruitShop(f.name()))
        .collect(Collectors.toList());