枚举

• 枚举类

public enum Family {
    FATHER,
    SON
}

• 使用

public class EnumUse {
    /**
     * 1.自动添加toString
     * 2.ordinal方法 表示声明顺序
     * 3.values()方法
     * @param args
     */
    public static void main(String[] args) {
        Family s = Family.FATHER;

        for(Family family : Family.values()){
            System.out.println(family + " " + family.ordinal());
        }
    }
}

• 与普通类类似

public enum OrdinalEnum {
    WEST("Live in west"),
    EAST("Live in east");

    String descrption;

    OrdinalEnum(String descrption) {
        this.descrption = descrption;
    }

    public String getDescrption() {
        return descrption;
    }

    public void setDescrption(String descrption) {
        this.descrption = descrption;
    }

    public static void main(String[] args) {
        for(OrdinalEnum ordinalEnum: OrdinalEnum.values()){
            System.out.println(ordinalEnum.getDescrption());
        }
    }
}