枚举

枚举类型

定义

public enum ActionCodeEnum{
    CREATE("create"),
    UPDATE("update"),
    QUERY("query"),
    DELETE("delete");

    private String code;

    private ActionCodeEnum(String code){
        this.code = code;
    }
}

调用

public class UseEnum{
        public boolean isCreate(ActionCodeEnum actionCodeEnum){
            return actionCodeEnum == ActionCodeEnum.CREATE;
    }
}

使用

public class Test{
    public static void main(){
        UseEnum useEnum = new UseEnum();
        useEnum.isCreate(ActionCodeEnum.UPDATE);
    }
}
这里的ActionCodeEnum.UPDATE == "update"