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I'm using geotools 14.3 with swing to load two shape files. A road network and a node network (road junctions).

Objective

I want to calculate the shortest path from each node to every other node. I've used python with QGIS to successfully do this. But now I want to achieve this programatically using GeoTools. I've been following this tutorial.

I've followed up to graph building, now I want to calculate shortest path. But it's a bit unclear for me on selecting nodes.

//find a source node (usually your user chooses one)
Node start = ..

How could I select a node from my point shapefile?

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