datethirdtry.java

java编程代码

import java.util.Scanner;

public class DateThirdTry
{
    private String month;
    private int day;
    private int year; //a four digit number.

    public void setDate(int newMonth, int newDay, int newYear)
    {
        month = monthString(newMonth);
        day = newDay;
        year = newYear;
    }

    public String monthString(int monthNumber)
    {
        switch (monthNumber)
        {
        case 1:
            return "January";
        case 2:
            return "February";
        case 3:
            return "March";
        case 4:
            return "April";
        case 5:
            return "May";
        case 6:
            return "June";
        case 7:
            return "July";
        case 8:
            return "August";
         case 9:
            return "September";
        case 10:
            return "October";
        case 11:
            return "November";
        case 12:
            return "December";
        default:
            System.out.println("Fatal Error");
            System.exit(0);
            return "Error"; //to keep the compiler happy
        }
    }

    public void writeOutput( )
    {
        System.out.println(month + " " + day + ", " + year); 
    }

    public void readInput( )
    {
        Scanner keyboard = new Scanner(System.in);
        System.out.println("Enter month, day, and year.");
        System.out.println("Do not use a comma.");
        month = keyboard.next( );
        day = keyboard.nextInt( );
        year = keyboard.nextInt( );
    }

    public int getDay( )
    {
        return day;
    }

    public int getYear( )
    {
        return year;
    }
    
    public int getMonth( )
    {
        if (month.equalsIgnoreCase("January"))
            return 1;
        else if (month.equalsIgnoreCase("February"))
            return 2;
        else if (month.equalsIgnoreCase("March"))
            return 3;
        else if (month.equalsIgnoreCase("April"))
            return 4;
        else if (month.equalsIgnoreCase("May"))
            return 5;
        else if (month.equals("June"))
            return 6;
        else if (month.equalsIgnoreCase("July"))
            return 7;
        else if (month.equalsIgnoreCase("August"))
            return 8;
        else if (month.equalsIgnoreCase("September"))
            return 9;
        else if (month.equalsIgnoreCase("October"))
            return 10;
        else if (month.equalsIgnoreCase("November"))
            return 11;
        else if (month.equalsIgnoreCase("December"))
            return 12;
        else
        {
            System.out.println("Fatal Error");
            System.exit(0);
            return 0; //Needed to keep the compiler happy
        }
    }

}