Java Long Multiplcation Error

[breaknrun12]

Why does the statement long x = 24 * 60 * 60 * 1000 * 1000 compute the value for x to equal 500654080 instead of what it really is 86400000000?

Thanks,

 

[Diancecht]

Because, by default, numbers without decimal point are considered ints, so you're multiplying ints and then storing the result in a long. But the result is bigger than maximun int, so you start over zero again.

Try this

long y = 24L * 60L * 60L * 1000L * 1000L ;

Cheers,
Dian