computer science

            package shipping;

            public 
            abstract 
            synchronized 
            class ShippingProcessorBase {
    
            private IDockyard 
            dockyard;
    
            public void ShippingProcessorBase(IDockyard);
    
            protected IDockyard 
            getDockyard();
    
            public void 
            processEvents(String);
    
            protected void 
            processShippingEvent(String);
    
            protected 
            abstract java.util.List 
            readManifest(String);
    
            protected 
            abstract void 
            processTruck(String, String);
    
            protected 
            abstract IShip 
            processShip(String);
}