hasnext and nextInt issues, please help me understand the problem

[Irving Luna]

I need to create a program that receives the dates from file dates.txt and outputs them to dates.out, if the date is valid, then it will provide a new format and the day that the date falls in the year, if not it will return "Invalid date: (original date and format)" it seems that I have it all completed below, but I keep getting the error below when I type in the correct file name, im not sure what the problem is since I'm calling for a valid int.

Input file name: dates.txt
Exception in thread "main" java.util.InputMismatchException
	at java.util.Scanner.throwFor(Scanner.java:909)
	at java.util.Scanner.next(Scanner.java:1530)
	at java.util.Scanner.nextInt(Scanner.java:2160)
	at java.util.Scanner.nextInt(Scanner.java:2119)
	at Lab12.main(Lab12.java:43)

import java.io.*;
import java.util.*;

public class Lab12{
   public static final int JAN = 1;
   public static final int FEB = 2;
   public static final int MAR = 3;
   public static final int APR = 4;
   public static final int MAY = 5;
   public static final int JUN = 6;
   public static final int JUL = 7;
   public static final int AUG = 8;
   public static final int SEP = 9;
   public static final int OCT = 10;
   public static final int NOV = 11;
   public static final int DEC = 12;
   
	public static void main(String[] arg)
						throws FileNotFoundException{
		Scanner console = new Scanner(System.in);
		Scanner input = getInput(console);
		

         
		while(input.hasNextLine()){
      
            String text = input.nextLine();
            Scanner time = new Scanner(text);
            
   			int day = time.nextInt(); // <<<< line 43
   			int month = time.nextInt(); 
   			int year = time.nextInt();
            if(validDate(day, month, year)){
               output.print (formatDate(day, month, year));
               }
            else
               output.print ("Invalid date: "+day+"/"+month+"/"+year);
		}
	}
	
	public static Scanner getInput(Scanner console)
						throws FileNotFoundException{
		System.out.print ("Input file name: ");
		File f = new File(console.nextLine());
		while(!f.canRead()){
			System.out.println ("File not found. Try again.");
			System.out.print ("Input file name: ");
			f = new File(console.nextLine());
		}
		return new Scanner(f);
	}
	
	public static boolean isLeapYear(int year){
		boolean isLeapYear = false;
		if(year % 400 == 0)
			isLeapYear = true;
		else if(year % 4 == 0 && year % 100 == 0)
			isLeapYear = false;
		else if(year % 4 == 0)
			isLeapYear = true;
		else
			isLeapYear = false;
		return isLeapYear;
	}
	//http://www.java-forums.org/new-java/41020-day-number-count.html
	public static int dayNumber(int day, int month, int year){
      int daysInMonth = 0;
      int days = 0;
      boolean leapYear = isLeapYear(year);
		for(int i = 1; i < month; i++){
			switch(month){
				case 1: daysInMonth += 31;
				break;
				case 2: if(leapYear)
                     daysInMonth = 29;
                    else
                     daysInMonth = 28;
				break;
				case 3: daysInMonth += 31;
				break;
				case 4: daysInMonth += 30;
				break;
				case 5: daysInMonth += 31;
				break;
				case 6: daysInMonth += 30;
				break;
				case 7: daysInMonth += 31;
				break;
				case 8: daysInMonth += 31;
				break;
				case 9: daysInMonth += 30;
				break;
				case 10: daysInMonth += 31;
				break;
				case 11: daysInMonth += 30;
				break;
				case 12: daysInMonth += 31;
				break;
            default:
            break;
         }
         while(month <= 12){
            days += days + daysInMonth + day;
            month++;
         }
		}
		return days;
	}
	
	public static boolean validDate(int day, int month, int year){
		boolean validDate = false;
		if(year >= 1 && year <= 3000){
			if(month >= 1 && month <= 12){
				if(month == 4 || month == 6 || month == 9 || month == 11 
									&& day >= 1 && day <= 30){
					validDate = true;
				}else if(month == 1 || month == 3 || month == 5 || month == 7
									|| month == 8 || month == 10 || month == 12 &&
									day <=31){
					validDate = true;
				}else if(month == 2){
					boolean leapYear = isLeapYear(year);
					if(leapYear = true && day >= 28){
						validDate = false;
					}
					else if(leapYear = false && day <= 29){
						validDate = true;
					}
					else{
						validDate = true;
					}
				}
			}
			else
				validDate = false;
		}
		else
			validDate = false;
		return validDate;
	}
	
	public static String formatDate(int day, int month, int year){
      String formatDate = String.format ("%d-Jan-%d", day, year);
      return formatDate;
	}
}

content of dates.txt file

10/1/1999
12/31/2000
2/29/1900
2/1/1996
1/1/2097
2/29/2000
7/4/1776
5/32/3001
0/2/1234
8/0/2345
9/30/3001
2/29/2010
3/31/2001
13/3/1867
12/31/3000

[Campbell Ritchie]

Start by creating a program which does nothing but read from your text file and print it on the screen. See whether you get the same Exception. Remember to use nextInt when you expect an int, etc. The reason is that you want to confirm that the Scanner is having the problem and you still get the InputMismatchException (IME).
I think you will probably suffer the same IME. If you look up IME in the documentation, you find it only occurs when Scanner has a problem. And it is a problem which I think you will not find in the books; if you look up Scanner#nextLine(), it doesn't say “reads the next line”.

More about it, which I hope you can actually understand, in this old post. You may have to use nextLine twice.