Thread: DATE.java!

It compiles fine if the user inputs mm/dd/yyyy, but if they input m/d/yyyy it wont work. Any ideas? I am going to upload the directions that I was given. Code is all done just a couple errors : (

Thanks in advance!
Joey

import java.util.Scanner;
 
public class Activity2 {
  public static void main(String[]args) {
 
Scanner sc = new Scanner(System.in);
String date, year;
int day, month;
boolean leapYear;
System.out.println("Please enter a date in the format of mm/dd/yyyy.");
date = sc.nextLine();
day= Integer.parseInt(formatDay(date));
month= flag(formatMonth(date));
year=formatYear(date);
leapYear=leapYear(date);
 
 
switch(month)
{
      case 1:System.out.println("The date is: January "+day+", "+year); break;
  case 2:if(day<=28){
    System.out.println("The date is: February "+day+", "+year); }
        break;
      case 3:System.out.println("The date is: March "+day+", "+year); break;
      case 4:System.out.println("The date is: April "+day+", "+year); break;
      case 5:System.out.println("The date is: May "+day+", "+year); break;
      case 6:System.out.println("The date is: June "+day+", "+year); break;
      case 7:System.out.println("The date is: July "+day+", "+year); break;
      case 8:System.out.println("The date is: August "+day+", "+year); break;
      case 9:System.out.println("The date is: September "+day+", "+year); break;
      case 10:System.out.println("The date is: October "+day+", "+year); break;
      case 11:System.out.println("The date is: November "+day+", "+year); break;
      case 12:System.out.println("The date is: December "+day+", "+year); break;
      default: System.out.println("What planet are you living on with that kind of date? Try again!");
}
 
System.out.println("It is "+leapYear+" that the year "+year+" is a leap year.");
}
 
 
 
 
public static String formatDay(String q)
{
String day;
int d;
day =q.substring(3,5);
d=Integer.parseInt(day);
return day;
}
 
 
 
 
public static int formatMonth(String q)
{
String month = q.substring(0,2);
int m = flag(Integer.parseInt(month));
return m;
}
 
 public static int flag(int month) 
    {
      if(month==1)
        month=1;
         if(month==2)
        month=2;
         if(month==3)
        month=3;
         if(month==4)
        month=4;
        if(month==5)
        month=5;
        if(month==6)
        month=6;
        if(month==7)
        month=7;
        if(month==8)
        month=8;
        if(month==9)
        month=9;
        if(month==10)
        month=10;
        if(month==11)
        month=11;
        if(month==12)
        month=12;
        return month;
  }
 
 
 
 
public static String formatYear(String q)
{
String year;
year = q.substring(6,10);
return year;
}
 
 
 
 
public static boolean leapYear(String q)
{
String year=q.substring(6,10);
int leap=Integer.parseInt(year);
{
if ((leap%4)==0 && (leap%100)!=0)
  return true;
if ((leap%4)==0&&(leap%100)==0&&(leap%400)==0)
  return true;
else
  return false;
}
 
 
 
}
}

Hi hiimjoey11,
if user inserts a date with format m/d/yyyy, method formatDay has an error
because you retrive day with a substring(3,5).

If you want that user can insert date with format mm/dd/yyyy or m/d/yyyy, you can modify
your method formatDate in this mode:

public static String formatDay(String q){
String day = "";
String[] elements = q.split("/");
if (elements[1].length()==1){
day = "0" + elements[1];
}else{
day = elements[1];
}

return day;
}

This method splits the date inserted by user and if the string for day has length =1, concats "0" to day string.

I dont' understand why method formatMonth returns an int, and formaDay returns a String.
An other thing: Why do you want that your code runs with 2 format of date, but you tell user insert a date with format mm/dd/yyyy?
Let me know!
Bye