Measurement Methods
To get the volume/area/length of the selected entities, enter
double vol = model.component(<ctag>).geom(<tag>).measure().getVolume();
To get the area/length of the boundary of the selected entities, enter
double bndVol = model.component(<ctag>).geom(<tag>).measure().getBoundaryVolume();
If you have selected two vertices, you can get their distance by entering
double[] d = model.component(<ctag>).geom(<tag>).measure().getVtxDistance();
d[0] is the distance, and d[i] is the distance in the ith coordinate (i = 123).
If you have selected one vertex, you can get its coordinates by entering
double[] coord = model.component(<ctag>).geom(<tag>).measure().getVtxCoord();
To get the total number of entities in the selected objects, enter
int[] entitiesPerDimension =    model.component(<ctag>).geom(<tag>).measure().getNEntities();
To get the total number of finite voids in the selected objects or finalized geometry, enter
int finiteVoids = model.component(<ctag>).geom(<tag>).measure().getNFiniteVoids();