Java program to display calendar for a given month in a given year

Java program to display calendar for a given month in a given year.
Java practice program for beginners.
Java practice program in loops.
Java practice program in dates.

My video on how to print formatted output using System.out.printf: https://youtu.be/C-qYlU0p7UY
My video on Java program to print date in given format: https://youtu.be/vgPH5DTWToA

0:00 Intro
0:23 Problem description
2:32 Explanation & Java code for the solution
4:19 Helper method to get month name for the given month number
20:56 Testing the Java code
25:39 Using Calendar class methods to get the name of the month & the number of days in a month

#javaprogramming #javatutorial #javaforbeginners

Question : Why are 1700, 1800 & 1900 not leap years but 2000 is?
Answer:
The number of days in a year are 365.2425, which is a little less than 365.25
Therefore, the correct number of days in 400 years = 365.2425*400 = 146097 days
Number of days with only the 4 year condition = 365.25*400 = 146100 [Number of days if the length of year was 365.25 and not 365.2425]
Difference = 3 (=146100-146097) days which we have overcompensated
Now, we have 400 years in which we have to remove 3 days: so 1700 not a leap year, 1800 not a leap year, 1900 not leap year but 2000 is a leap year
Total 3 days saved
And three 100th years between 400 year gap (ex: 1700,1800 & 1900 between 1600 and 2000) are chosen so that the calendar & seasons stay aligned to the earths natural orbit.