我必须用Java创建一个月级 [英] I have to create a month class in Java

问题描述

其中一个要求是 getMonthName 方法，该方法返回月份的名称，即1月为1.并且 toString 返回月份名称（String representsesentation），我只是担心我正在做的事情比这更简单：

One of the requirements is a getMonthName method that returns the name if the month, i.e. January is 1. And a toString that returns the month name (String represesentation) , and I'm just worried that there's an easier way for what I'm doing than this:

import java.util.Scanner;
import java.io.*;
public class Month {
    private int monthNum = 0;
    private String monthName;
    String monthOne = "JANUARY";
    String monthTwo = "FEBRUARY";
    String monthThree = "MARCH";
    String monthFour = "APRIL";
    String monthFive = "MAY";
    String monthSix = "JUNE";
    String monthSeven = "JULY";
    String monthEight = "AUGUST";
    String monthNine = "SEPTEMBER";
    String monthTen = "OCTOBER";
    String monthEleven = "NOVEMBER";
    String monthTwelve = "DECEMBER";
    //CONSTRUCTORS  
    public Month() 
    {
        monthNum = 1;
    }   
    public Month(int monthNum)
    {
        this.monthNum = monthNum;
        if ((monthNum > 12) || (monthNum <1))
        {
            monthNum = 1;
        }
    }   
    public Month(String monthOne, String monthTwo, String monthThree, String monthFour, String monthFive, String monthSix, String monthSeven, 
            String monthEight, String monthNine, String monthTen, String monthEleven, String monthTwelve)
    {
        monthName.toUpperCase();

        if (monthName.equals(monthOne))
        {
            monthNum = 1;
        }
        else if (monthName.equals(monthTwo))
        {
            monthNum = 2;   
        }
        else if (monthName.equals(monthThree))
        {
            monthNum = 3;
        }
        else if (monthName.equals(monthFour))
        {
            monthNum = 4;
        }
        else if (monthName.equals(monthFive))
        {
            monthNum = 5;
        }
        else if (monthName.equals(monthSix))
        {
            monthNum = 6;
        }
        else if (monthName.equals(monthSeven))
        {
            monthNum = 7;
        }
        else if (monthName.equals(monthEight))
        {
            monthNum = 8;
        }
        else if (monthName.equals(monthNine))
        {
            monthNum = 9;
        }
        else if (monthName.equals(monthTen))
        {
            monthNum = 10;
        }
        else if (monthName.equals(monthEleven))
        {
            monthNum = 11;
        }
        else 
        {
            monthNum = 12;
        }
    }


    //METHODS
    public void setMonthNum(int monthNum)
    {
        this.monthNum = monthNum;
        if ((monthNum >12) || (monthNum<1))
        {
            monthNum = 1;
        }
    }

    public int getMonthNumber()
    {
        return monthNum;
    }

    public String getMonthName()
    {
        if (monthNum == 1)
        {
            return "January";
        }
        else if (monthNum == 2)
        {
            return "February";
        }
        else if (monthNum == 3)
        {
            return "March";
        }
        else if (monthNum == 4)
        {
            return "April";
        }
        else if (monthNum == 5)
        {
            return "May";
        }
        else if (monthNum == 6)
        {
            return "June";
        }
        else if (monthNum == 7)
        {
            return "July";
        }
        else if (monthNum == 8)
        {
            return "August";
        }
        else if (monthNum == 9)
        {
            return "September";
        }
        else if (monthNum == 10)
        {
            return "October";
        }
        else if (monthNum == 11)
        {
            return "November";
        }
        else 
        {
            return "December";
        }
    }

    public String toString()
    {
        if (monthNum == 1)
        {
            return "January";
        }
        else if (monthNum == 2)
        {
            return "February";
        }
        else if (monthNum == 3)
        {
            return "March";
        }
        else if (monthNum == 4)
        {
            return "April";
        }
        else if (monthNum == 5)
        {
            return "May";
        }
        else if (monthNum == 6)
        {
            return "June";
        }
        else if (monthNum == 7)
        {
            return "July";
        }
        else if (monthNum == 8)
        {
            return "August";
        }
        else if (monthNum == 9)
        {
            return "September";
        }
        else if (monthNum == 10)
        {
            return "October";
        }
        else if (monthNum == 11)
        {
            return "November";
        }
        else 
        {
            return "December";
        }
    }
}

我错过了什么或是这是我这个级别的最好方法吗？

Am I missing something or is this the best way at my level to do this?

推荐答案

如果你必须自己实现Month类，那么看看枚举，否则
查看 java.time.Month - 尝试这样的事情......

If you must implement a Month class yourself then look into enums, otherwise check out the docs for java.time.Month – Try something like this...

import java.time.Month;

public Month getMonthName( int monthNum )
{
    return Month.of( monthNum );
}

或者只是......

Or simply...

System.out.println( Month.of( monthNumber ) );

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