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Thread: Getting input

  1. #1
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    Default Getting input

    Im writing the demo for my class to demonstrate each method. The class takes a number and assigns it to a month, or is supposed to. I have it working to say month 1 is January, month 2 is February and so on. I want to user to enter a month and set that to a number, how can I do this? Here is my class and driver:

     public class Month
       {
          private int monthNumber;
     
           public Month()
          {
             monthNumber = 1;
          }
     
           public Month(int m)
          {
             if (m > 0 && m < 13)
             {
                monthNumber = 1;
             }
             else
             {
                monthNumber = m;
             }
          }
     
           public Month(String name)
          {
             if (name.equalsIgnoreCase("january"))
                monthNumber = 1;
             else if (name.equalsIgnoreCase("february"))
                monthNumber = 2;
             else if (name.equalsIgnoreCase("march"))
                monthNumber = 3;
             else if (name.equalsIgnoreCase("april"))
                monthNumber = 4;
             else if (name.equalsIgnoreCase("may"))
                monthNumber = 5;
             else if (name.equalsIgnoreCase("june"))
                monthNumber = 6;
             else if (name.equalsIgnoreCase("july"))
                monthNumber = 7;
             else if (name.equalsIgnoreCase("august"))
                monthNumber = 8;
             else if (name.equalsIgnoreCase("september"))
                monthNumber = 9;
             else if (name.equalsIgnoreCase("october"))
                monthNumber = 10;
             else if (name.equalsIgnoreCase("november"))
                monthNumber = 11;
             else if (name.equalsIgnoreCase("december"))
                monthNumber = 12;
             else
                monthNumber = 1;
     
          }
     
           public void setMonthNumber(int a)
          {
             if (a > 0 && a < 13)
             {
                monthNumber = 1;
             }
             else
             {
                monthNumber = a;
             }
          }
     
           public int getMonthNumber()
          {
             return monthNumber;
          }
     
           public String getMonthName()
          {
             String month;
     
             switch (monthNumber)
             {
                case 1:  month = "January";
                   break;
                case 2:  month = "February";
                   break;
                case 3:  month = "March";
                   break;
                case 4:  month = "April";
                   break;
                case 5:  month = "May";
                   break;
                case 6:  month = "June";
                   break;
                case 7:  month = "July";
                   break;
                case 8:  month = "August";
                   break;
                case 9:  month = "September";
                   break;
                case 10: month = "October";
                   break;
                case 11: month = "November";
                   break;
                case 12: month = "December";
                   break;
                default: month = "";
             }
           return month;
          }
     
           public String toString()
          {
             return getMonthName();
          }
     
           public boolean equals(Month object2)
          {
             boolean status;
     
             if (object2.getMonthNumber() == monthNumber)
             {
                status = true;
             }
             else
             {
                status = false;
             }
             return status;
          }
     
           public boolean greaterThan(Month object)
          {
             boolean status;
     
             if (monthNumber > object.getMonthNumber())
             {
                status = true;
             }
             else
             {
                status = false;
             }
             return status;
          }
     
           public boolean lessThan(Month object3)
          {
             boolean status;
     
             if (monthNumber < object3.getMonthNumber())
             {
                status = true;
             }
             else
             {
                status = false;
             }
             return status;
          }
       }

    Here is my driver, at the bottom of my driver, I try to get input from the user( a month), so when they type in february, I want it to output February is month 2, or January is month 1, and so on. I cant seem to get that to work though.

    Here is my driver so far:

    import java.util.Scanner;
     
    public class MonthDemo
    {
       public static void main(String[] args)
       {
          // Use the no-arg constructor.
          Month object1 = new Month();
          System.out.println("Month " + object1.getMonthNumber() +
                             " = " + object1);
    	  Month object2 = new Month(2);
    	  for (int i = 1; i <= 12; i++)
          {
             object2.setMonthNumber(i);
             System.out.println("Month " + object2.getMonthNumber() +
                             " name is " + object2);
          }
     
    		String mName;
    		Scanner keyboard = new Scanner(System.in);
    		Month object5 = new Month("");
     
    		System.out.println("Enter a month name: ");
    		mName = keyboard.nextLine();
    		System.out.println(object5);
       }
    }


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: Getting input

    You created the month object without assigning it any name. move it's declaration down three lines and declare it with the mName string instead of an empty string.

    Month object5 = new Month(mName);

    As a side note, declaring variable names object1, object2, ... objectn is a bad practice as you will quickly get confused which object is being used for what.

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