public static void main(String[] args) { NewWorker w1, w2, w3, w4, w5; Student s1, s2; Household myFamily; s1 = new Student("Edward Teller", "Physics"); s2 = new Student("Liz Powell", "Computer Science"); w1 = new NewWorker("Robert William Hunter", "23/10/2005", 35000.00); w2 = new NewWorker("Mary Jane Hull", "06/09/2007"); w2.setSalary(40000.00); myFamily = new Household(5); myFamily.insertNewHouseholdMember(s1); myFamily.insertNewHouseholdMember(s2); myFamily.insertNewHouseholdMember(w1); myFamily.insertNewHouseholdMember(w2); w1.setSpouse(w2); w2.setSpouse(w1); System.out.println("Total family income of Robert and Mary " + w1.getFamilyIncome()); System.out.println("\nDescription of the family is\n" + myFamily.toString()); }