geotoolkit

final ParameterValueGroup parameters = PostgisNGDataStoreFactory.PARAMETERS_DESCRIPTOR.createValue();
Name typeName = null;

Parameters.getOrCreate(PostgisNGDataStoreFactory.HOST, parameters).setValue("*******");
Parameters.getOrCreate(PostgisNGDataStoreFactory.PORT, parameters).setValue(5432);
Parameters.getOrCreate(PostgisNGDataStoreFactory.DATABASE, parameters).setValue("vessel");
Parameters.getOrCreate(PostgisNGDataStoreFactory.USER, parameters).setValue("*******");
Parameters.getOrCreate(PostgisNGDataStoreFactory.PASSWD, parameters).setValue("******");

final DataStore postgisStore = DataStoreFinder.getDataStore(parameters);
if (postgisStore == null) {
  JOptionPane.showMessageDialog(null, "Could not connect - check parameters");
}else{
  System.out.println("----------------------------------------");
  System.out.println(postgisStore.getNames());
  for(Iterator<Name> postgisStoreTables = postgisStore.getNames().iterator(); postgisStoreTables.hasNext();){
         Name postgisStoreTable = postgisStoreTables.next();
         if (postgisStoreTable.toString().contains("traj")){ typeName = postgisStoreTable;}
}

   Session postGisSession = postgisStore.createSession(true);
   FeatureCollection collection = postGisSession.getFeatureCollection(QueryBuilder.all(typeName));
   final MutableStyle style = RandomStyleFactory.createRandomVectorStyle(collection);
   final FeatureMapLayer featMapLayer = MapBuilder.createFeatureLayer(collection, style);
   this.MAPCONTEXT.layers().add(featMapLayer);