Question

Instructions

ASSIGNMENT 2 is at bottom of the question. Very simple program and these intructions are only to modify it slightly, should only take about 10 minutes says my proffessor.

Your file should be named “Main.java”.

1. Ask the user how many year inputs he wants to check - an integer.
   1. Assume that the user always gives an input which is between 1 and 5 (inclusive).
2. Next, ask the user for K number of year inputs where K = the number user has given as input before (inside a while loop).
3. Check for each year input whether that year is a leap year or not (Assignment 2).
   1. Take year input (positive integer - should be between 1500 and 2017, inclusive).
   2. If the year input is not between 1500 and 2017, do not check for leap year, rather print that this year cannot be checked.
   3. If the input year is a leap year, print that year is a leap year; otherwise, print that the year is not a leap year.
   4. make sure to handle the centurial years, i.e., years ending in 00, e.g., 1900, 1800, 1700, 2000, etc.?
4. Copy the code written for Assignment 2 and add the 'while loop' on top of that. Use while loop only for this assignment.

Goals

1. Gain experience in input taking using the scanner class in Java.
2. Gain experience in if/else selection statement in Java.
3. Gain experience in while loop techniques in Java.

Sample Code Structure

// add necessary import commands

public class samplecode{

public static void main (String[] args){

// create the required variables first.

while (not all inputs have been taken - add this condition here){

//add the code from assignment 2.

}

}

}

Test Your Program

• Once the code is typed, you will compile+run (execute) your code.
• You will input the number of years (integer input).
• Next input the actual year values between 1500 and 2017  (integer input).
• See the output given by your code.

Sample Output

Your output should look like this:

• How many years do you want to check (must be between 1 and 5)? 2
  What's the year you want to test? (make sure it's between 1500 and 2017): 1400
  This year cannot be checked. Try again!
  What's the year you want to test? (make sure it's between 1500 and 2017): 2016
  Yes, 2016 is a leap year!

• How many years do you want to check (must be between 1 and 5)? 3
  What's the year you want to test? (make sure it's between 1500 and 2017): 1400
  This year cannot be checked. Try again!
  What's the year you want to test? (make sure it's between 1500 and 2017): 2016
  Yes, 2016 is a leap year!
  What's the year you want to test? (make sure it's between 1500 and 2017): 2017
  Nope, 2017 is not a leap year!

ASSIGNMENT 2:

import java.util.Scanner;

public class MyClass {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.print("What year do you want to test? (make sure it's between 1500 and 2017): ");
int year = sc.nextInt();
  
if(year < 1500 || year > 2017)
System.out.println("This year cannot be checked. Try again!");
else
{
if(year % 400 == 0)
System.out.println("Yes, " + year + " is a leap year!");
else if(year % 100 != 0 && year % 4 == 0)
System.out.println("Yes, " + year + " is a leap year!");
else
System.out.println("No, " + year + " is NOT a leap year!");
}
}
}

Answer 1

ANSWER:-

import java.util.Scanner;

class MyClass {
public static void main(String args[]) {
   Scanner sc = new Scanner(System.in);
   System.out.println("How many years do you want to check (must be between 1 and 5)?");
   int n=sc.nextInt();
   while(n>0)
   {
       System.out.print("What year do you want to test? (make sure it's between 1500 and 2017): ");
       int year = sc.nextInt();
       if(year < 1500 || year > 2017)
       System.out.println("This year cannot be checked. Try again!");
       else
       {
       if(year % 400 == 0)
       System.out.println("Yes, " + year + " is a leap year!");
       else if(year % 100 != 0 && year % 4 == 0)
       System.out.println("Yes, " + year + " is a leap year!");
       else
       System.out.println("No, " + year + " is NOT a leap year!");
       }
       n--;
   }
}
}

OUTPUT:-

How many years do you want to check (must be between 1 and 5)? 3
What year do you want to test? (make sure it's between 1500 and 2017): 1400
This year cannot be checked. Try again!
What year do you want to test? (make sure it's between 1500 and 2017): 2016
Yes, 2016 is a leap year!
What year do you want to test? (make sure it's between 1500 and 2017): 
No, 2017 is NOT a leap year!

// If any doubt please comment