Kotlin 密封类与 Java 枚举（及密封接口！）：有限层次的故事
原文英文，约500词，阅读约需2分钟。发表于：。Imagine you're a king with a royal decree. You want to declare that only certain individuals can inherit the throne, and no one else. In the programming world, that's kind of like a sealed class!...
Kotlin的密封类允许定义有限的子类层次，确保类型安全和灵活性。相比之下，Java的枚举类选项有限且不可扩展。虽然Java 17引入了密封接口，提供了更多灵活性，但Kotlin的密封类更为成熟。
