VB.NET to Java : Timespan ?

[forgeuk]

I'm new to Java, and I'm converting a VB.NET program to Java and learning as I go along, I'm a bit stuck on one bit, how would I convert this VB.NET function to Java:

Public Function Diff(ByVal date As Julian) As TimeSpan
     Const TICKS_PER_DAY As Double = 864000000000
     Return New TimeSpan(CType(((m_Date - date.m_Date) * TICKS_PER_DAY), Long))
   End Function

It's the TimeSpan data type that I'm stuck on, I can't seem to find an equivelant in java.

Thanks in advance...

[forgeuk]

Echo.......echo .......echo.... ..

Its a bit quiet on here, found the answer on a proper Java message board, the answer is....Use a LONG data type.