Create a uMap (http://umap.openstreetmap.fr) via Java.
➡️ Find the code at codeberg.org. 🧊
This library uses Immutables for building the objects.
Create a simple map:
var geometry = LineStringGeometry.of(List.of(new double[]{14.3804,52.5342},new double[]{14.8932,52.6739}));
var properties = FeatureProperties.of("My line", UmapOptions.PolygonGeometryUmapOptions.of("Red"));
var feature = Feature.of(properties, geometry);
var features = List.of(feature);
var layer = Layer.of("My features", features);
var layers = List.of(layer);
var initialMapPosition = PointGeometry.of(new double[]{14.8,52.5});
var map = Umap.of("My awesome map", initialMapPosition, layers);Having now a map you could use your favorite JSON library to generate
a JSON document which could be imported to uMap. For example with GSON:
try (PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("c:\\temp\\test.umap", StandardCharsets.UTF_8)))) {
new Gson().toJson(map, out);
} catch (IOException e) {
throw new RuntimeException(e);
}