枚举可以有抽象的方法吗? [英] Can an enum have abstract methods?
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问题描述
解决方案
是的,但你可能更喜欢枚举它实现了一个界面,看这里。我觉得看起来好多了这是抽象方法的例子:
public enum Animal {
CAT {
public String makeNoise {returnMEOW!; }
},
DOG {
public String makeNoise(){returnWOOF!; }
};
public abstract String makeNoise();
}
Can an enum have abstract methods? If so, what is the use, and give a scenario which will illustrate this usage.
解决方案
Yes, but you may prefer enum which implements an interface, Look here. I think It looks much better. This is example for abstract method:
public enum Animal {
CAT {
public String makeNoise() { return "MEOW!"; }
},
DOG {
public String makeNoise() { return "WOOF!"; }
};
public abstract String makeNoise();
}
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