develop cross platform application using java

[ros]

hi..
i'm going to develop a cross platform application between windows xp and Linux
using java. But i'm confused,i know that java can be used in different os platforms but do i have to develop my application in two different platforms or simply combine it?if i have to combine it, then can someone suggest, java in which platform i should use?:confused:
thank you,i look forward for replies.

[Jimbooo]

To clear things up:

A Java application runs in the JVM (Java virtual machine). The Java virtual machine is available for different operating systems. So I would conclude that it doesn't really matter in which OS you create your program.

Grz,

Jim

[ros]

Thanx jimboo..