更新时间:2023-02-07 13:36:20
Java枚举不像C或C ++枚举,它们实际上只是整数的标签。
Java enums are not like C or C++ enums, which are really just labels for integers.
Java枚举的实现更像是类 - 它们甚至可以有多个属性。
Java enums are implemented more like classes - and they can even have multiple attributes.
public enum Ids {
OPEN(100), CLOSE(200);
private final int id;
Ids(int id) { this.id = id; }
public int getValue() { return id; }
}
最大的区别是它们类型安全这意味着您不必担心将COLOR枚举分配给SIZE变量。
The big difference is that they are type-safe which means you don't have to worry about assigning a COLOR enum to a SIZE variable.
请参阅 http://docs.oracle.com/javase/tutorial/java/javaOO/enum.html 了解更多信息。