如何在Java中使用我的Enum设置整数,字符串值？

Question

如何在枚举中预先定义任何类型的值？

public enum Hardware
{
    USB2(0) = "external low speed",
    PCI(1)  = "embedded",
    USB3(2) = "external high speed
}

System.out.println( Hardware.USB2 ) // show me external low speed

Answer 1

你可以members在中定义enums.然后覆盖toString()

您可以定义一个getDesc()更好的IMO覆盖方法toString().

public enum Hardware
{
    USB2(0, "external low speed"),
    PCI(1,"embedded"),
    USB3(2,"external high speed");

    private String desc;
    private int id;

    private Hardware(int id, String desc) {
        this.id = id;
        this.desc = desc;
    }

    @Override
    public String toString() {
        return this.desc;
    }
}

请注意,从Java版本开始可以获得解决方案1.5