Trouble with J2D Timeline app

Hi,
I am very new to J2D and graphics programming. I currently know how to go about drawing stuff on the screen or make it move in a very basic fashion. I am trying to develop a app that looks like a timeline moving. Let's say that I have a bunch of planes and they are approaching some airport. The airport has its timeline that is a line in the middle of the screen(horizontal or vertical) with a bunch of time point hanging out of it. As time is going by the time points are going towards the bottom (or right) of the timeline at the end of the screen. Also if there is a plane that is approaching it too is hanging on to the timeline and is moving towards the end of the screen as time passes.
| | | | | | || | | * ||
start end
--------------------------------->>>Time passage
| = time
* = some plane
My problem is that even though I could probably investigate in drawing and animating this, I don't know how would I go about designing something like this. What would be the objects and what would move. Is the times attached to a circular timeband and the time band is moving(provided that I can program a timeband) or is the timeband static and the points moving. I would really appreciate any suggestions on how I could go about doing this or any referenced on the web that teach how to design something like this (and more).
Thank you,
Jay.

you could make an object for a timeline section that holds a string for the time and a boolean for wether a plane is on it. Then create an array of these objects and having them cycling through with different values every time.

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