//Abstract Factory Class - that return factory type
  	public class ComplexInstallFactory extends InstallFactory {
  		throws BadInstallException {
  			public Install getInstall(int InstallTypeId) {
  				Install Install = null;
  				if (InstallTypeId == Const.Install_on_Phone) {
  					//complex Install (lets say  - installing on phone)
  					Install = new on_Phone();
  				} else throw new BadInstallException(“InstallTypeId = ” + InstallTypeId);
  				return Install;
  			}
  		}

  		//Factory Type class to define what factory will be chosen
  		public class InstallFactoryType
  		throws BadInstallFactoryException {
  			public static final int TYPE_SIMPLE = 1;
  			public static final int TYPE_COMPLEX = 2;
  			public InstallFactory getInstallFactory(int type) {
  				InstallFactory sf = null;
  				if (type == TYPE_SIMPLE) {
  					sf = new SimpleInstallFactory();
  				} else if (type == TYPE_COMPLEX) {
  					sf = new ComplexInstallFactory();
  				} else throw new BadInstallFactoryException(“No factory !! ”);
  				return sf;
  			}
  		}

  		//------------------------------------------------------------------------------
  		//Now let’s look at the calling code, which uses the factory:
  		//------------------------------------------------------------------------------

  		InstallFactoryType abFac = new InstallFactoryType();
  		InstallFactory factory = null;
  		Install s = null;
  		//returns a InstallFactory but whether it is a //SimpleInstallFactory or a ComplexInstallFactory is not //known to the caller.
  		factory = abFac.getInstallFactory(1); //returns SimpleInstallFactory
  		//returns a Install but whether it is a Onsite or a Pentagon is //not known to the caller.
  		s = factory.getInstall(2); //returns Remote. s.Install(); //Installs a Remote
  		//returns a InstallFactory but whether it is a //SimpleInstallFactory or a ComplexInstallFactory is not //known to the caller.
  		factory = abFac.getInstallFactory(2);
  		//returns a Install but whether it is a Onsite or a Pentagon is //not known to the caller.
  		s = factory.getInstall(3); //returns a pentagon.
  		s.Install(); //Installs a pentagon