Can I ask about Java coding in this page?

[o0NotSoToxicPoisoN0o]

If so then I need help, I need to make a date validator for school.

What it should do:

1. Ask for Day, Month and Year.

2. Prints Valid for valid dates ie. 12/02/1995

3. Identify if a specific date is a leap year.

 

my problem is I dont know how to tell java to identify it a a leap year.

what equation to use and stuff...

Im using a compiler called BlueJ

Thanks in advance

[bgibbz]

If year % 4 = 0 then leap year. I don't know java but I think that logic should work. 

 

 

Edit: disregard this, apparently my understanding of a leap year wasn't entirely accurate. 

[iRileyx]

You can in this section.

https://linustechtips.com/main/forum/20-programming/

[elpiop]

Just check the conditions in an if statement:

 

if (((year % 4 == 0) && (year % 100 != 0)) ||(year % 400 == 0)){

return true;

}

[Techstorm970]

Well, the definition of a leap year is kinda complicated.  Let's start there.

https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=leap+year+rules&*

Quote

There is a leap year every year whose number is perfectly divisible by four - except for years which are both divisible by 100 and not divisible by 400. The second part of the rule effects century years. For example; the century years 1600 and 2000 are leap years, but the century years 1700, 1800, and 1900 are not.

 

[Techstorm970]

2 minutes ago, elpiop said:

if ((year % 4 == 0) && (year % 100 == 0) && (year % 400 == 0)){

return true;

}

Uh...no.

 

if ((year % 4 == 0) && (year % 100 != 0))

{

return true;

}

else if ((year % 4 == 0) && (year % 400 == 0))

{

return true;

}

else

{

return false;

}

[elpiop]

2 minutes ago, techstorm970 said:

Uh...no.

 

if ((year % 4 == 0) && (year % 100 != 0))

{

return true;

}

else if ((year % 4 == 0) && (year % 400 == 0))

{

return true;

}

else

{

return false;

}

yeah, my bad, i wrote that initially from memory. I edited my post after I checked and saw it was incorrect.

[WkdPaul]

The thread was moved to the Programming section

[anticeon]

Stackexchange

[o0NotSoToxicPoisoN0o]

On 24/03/2017 at 1:51 PM, techstorm970 said:

Uh...no.

 

if ((year % 4 == 0) && (year % 100 != 0))

{

return true;

}

else if ((year % 4 == 0) && (year % 400 == 0))

{

return true;

}

else

{

return false;

}

can you explain to me in English what this code is saying to java?

 

[Techstorm970]

1 hour ago, o0NotSoToxicPoisoN0o said:

can you explain to me in English what this code is saying to java?

 

If the year is divisible by 4 and isn't divisible by 100, then it is a leap year.

 

However, if the year is divisible by 4 and is divisible by 400, then it is a leap year.

 

Otherwise, the year is not a leap year.