layout.java

AxisOrientation orientationA = AxisOrientation.Y;
AxisOrientation orientationB = AxisOrientation.X;
ILayout<IReaction> layout = new LinearReactionLayout(
                               new LinearMoleculeSetLayout(
                                  new StandardMoleculeLayout(), orientationA),
                               new LinearMoleculeSetLayout(
                                  new StandardMoleculeLayout(), orientationA),
                               2, orientationB);