public class ElementRunner2 { public static void main(String[] args) { System.out.println("Combination # 1 - Nitrogen and Hydrogen"); Element hydrogen = new Element(); Element nitrogen = new Element("Nitrogen", true, 7, -3, "N"); nitrogen.combine(hydrogen); System.out.println("\nCombination # 2 - Iron and Oxygen"); Element iron =new Element("Iron", "Fe", 2); iron.setAtomicNumber(26); Element oxygen = new Element("Oxygen", true, 8, -2, "O"); iron.combine(oxygen); System.out.println("\nCombination # 3 - Magnesium and Phosphorus"); Element magnesium = new Element("Magnesium", "Mg", 2); Element phosphorus = new Element("Phosphorus", "P", 0); phosphorus.setValence(-3); phosphorus.combine(magnesium); System.out.println("\nCombination # 4 - Ruthenium and Oxygen"); Element ruthenium = new Element(); ruthenium.setName("Ruthenium"); ruthenium.setValence(8); ruthenium.setSymbol("Ru"); oxygen.combine(ruthenium); System.out.println("\nCombination # 5 - Flerovium and Silver"); Element flerovium = new Element("Flerovium", false, 114, 2, "Fl"); Element silver = new Element("Silver", "Ag", 4); flerovium.combine(silver); System.out.println("\nCombination # 6 - Xenon and Niobium"); Element xenon = new Element("Xenon", true, 54, 0, "Xe"); Element niobium = new Element(); niobium.setName("Niobium"); niobium.setValence(5); niobium.setNatural(true); niobium.setSymbol("Nb"); niobium.setAtomicNumber(41); niobium.combine(xenon); System.out.println("\nCombination # 7 - Tennessine and Tungsten"); Element tennessine = new Element("Tennessine", false, 117, -1, "Ts"); Element tungsten = new Element("Tungsten", true, 74, +6, "W"); tungsten.combine(tennessine); } }