[Java] List.of() 报错问题解决

首先，检查您使用的Java版本是否正确？

由于Java 9才支持List接口的static工厂方法，请参见List.of。

  private static List<Item> defaultItems() {
       //java 8
       return Arrays.asList(
               new Item(1L, "Burger", 599L, "Tasty", "https://cdn.auth0.com/blog/whatabyte/burger-sm.png"),
               new Item(2L, "Pizza", 299L, "Cheesy", "https://cdn.auth0.com/blog/whatabyte/pizza-sm.png"),
               new Item(3L, "Tea", 199L, "Informative", "https://cdn.auth0.com/blog/whatabyte/tea-sm.png")
       );
//        //java 11
//        return List.of(
//                new Item(1L, "Burger", 599L, "Tasty", "https://cdn.auth0.com/blog/whatabyte/burger-sm.png"),
//                new Item(2L, "Pizza", 299L, "Cheesy", "https://cdn.auth0.com/blog/whatabyte/pizza-sm.png"),
//                new Item(3L, "Tea", 199L, "Informative", "https://cdn.auth0.com/blog/whatabyte/tea-sm.png")
//        );
       
       
   }

java-8-how-to-initialize-list-of-list-in-one-line