track a vehicle using gps

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Javascript

Java

Google-Maps

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Hello,
I have to develop a java web-application(academic project) .In that I would like to provide a module where a vehicle can be tracked i.e vahicl has to be shown on google map.

I need help like.....
>How to use google maps in my project.
>how to get a particular vehicle which i want to trace.
and then show as vehicle moving...on map.

Thanks in advance..