Java灵活使用枚举表示一组字符串的操作

Java枚举表示一组字符串

public class HelloWorld {    public static void main(String []args) {       System.out.println("Hello World!");System.out.println(Season.SPRING.toString());System.out.println(Season.SPRING.value());    }}enum Season {SPRING("spring"), SUMMER("summer"), AUTUMN("autumn"), WINTER("winter");public final String value;private Season(String value) {this.value = value;}public String value() {return this.value;}}

程序输出结果如下：

Hello World!SPRINGspring

Java枚举类的正确使用

规范使用枚举类

public enum StatEnum {    SUCCESS(1,"成功"),    FAILD(0,"失败"),    REPEAT(-1,"重复"),    INNER_ERROR(-2,"系统异常"),    DATA_ERROR(-3,"数据异常");    private  int state;    private  String stateInfo;    StatEnum(int state, String stateInfo) {        this.state = state;        this.stateInfo = stateInfo;    }    public int getState() {        return state;    }    public String getStateInfo() {        return stateInfo;    }    public static StatEnum stateOf(int index){        for(StatEnum state: values()){            if(state.getState() == index){                return state;            }        }        return  null;    }}

枚举搭配接口一起使用

// 定义接口public interface CodeEnum {    Integer getCode();        String getMessage();}

// 定义枚举public enum StatusEnum implements CodeEnum {    SUCCESS(0, "成功"),    DAILD(1, "失败");    private Integer code;    private String message;    StatusEnum(Integer code, String message) {        this.code = code;        this.message = message;    }        @Override    public Integer getCode() {        return code;    }    @Override    public String getMessage() {        return message;    }}

// 定义工具类public class EnumUtil {    public static <T extends CodeEnum> T getByCode(Integer code, Class<T> enumClass) {        for (T each: enumClass.getEnumConstants()) {            if (code.equals(each.getCode())) {                return each;            }        }        return null;    }}

使用：

EnumUtil.getByCode(0, StatusEnum.class).getMessage()EnumUtil.getByCode(1, StatusEnum.class).getCode()

以上为个人经验，希望能给大家一个参考，也希望大家多多支持。

那么，不如我们礼貌地保持相对距离，不至于太冷，不至于太痛。