Question

CODING IN JAVA

Dates are printed in several common formats. Two of the more common formats are:

07/21/55 and July 21, 1955
Write a program that reads a date in the first format and prints that date in the second format.
Prompt the user and accept user input for the date in MM/DD/YYYY format.
Retrieve the month portion of the date entered and convert it to an integer.
Do the same thing for day and year
Create a string named months that contains the number of the month and the name of the month: 1 January2 February3 March….
Convert the month into a string
Find the index where the numeric value for the month is held
Retrieve the text version of the month.
Output the date in expanded format.
//Sample run #1
Enter a date in MM/DD/YYYY format: 04/12/2000
April 12, 2000

//Sample run #2
Enter a date in MM/DD/YYYY format: 11/10/2000
November 10, 2000

//Sample run #3
Enter a date in MM/DD/YYYY format: 12/20/2000
December 20, 2000

Note that for sample run 3, you are likely to get an out of bounds error unless you provide a 13th option within the string.
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: begin 90, end -1, length 98
   at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3107)
   at java.base/java.lang.String.substring(String.java:1873)
   at edu.ilstu.DateProgram.main(DateProgram.java:20)

Answer 1

CODE:

import java.io.*;
//class Date
public class Date{
//main method
public void main(String args[])throws IOException{
//strigng to hold the input
String input;
//integer to store the month date and year
int m,d,y;
  
//String months that holds the month date and month name
String months = "1 January 2 February 3 March 4 April 5 May 6 June 7 July 8 August 9 September 10 October 11 November 12 December 13";
  
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
  
//Asking the user to input the date
System.out.println("Enter a date in MM/DD/YYYY format");
input = in.readLine();
  
//using the .split() method to get the month date and year strings
String[] date = input.split("/");
  
//converting the strings to integers
m = Integer.parseInt(date[0]);
d = Integer.parseInt(date[1]);
y = Integer.parseInt(date[2]);
  
//checking if the date and month entered was valid or not
if(m > 12||m <1||d>31||d<1)
{
System.out.println("Invalid Month or Date");
}
//if it was valid
else{
//the index of the month number is found and the index of the next month is found out and the substring between these two indeces gives the month string
date[0] = months.substring(months.indexOf(Integer.toString(m))+2,months.indexOf(Integer.toString(m+1))).trim();
//printing the month date and year in the second fromat
System.out.println(date[0]+" "+date[1]+", "+date[2]);
}
}
}

CODE IMAGE(Check the indentation):

OUTPUT:

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Thank You!