public static void main(String[] args) {
// for all these constructors, assume that the first
// parameter is the owner and that the toString method
// of the Owner class returns the name
Owner chris = new Owner("Chris");
Owner alex = new Owner("Alex");
Car usedCar = new Car(alex, ...);
userCar.updateOwner(chris);
// assume License implements the Ownable interface
License lic1 = new License(chris, ...);
License lic2 = new License(alex, ...);
lic2.updateOwner(chris);
// assume Computer implements the Ownable and Insurable interfaces
Computer laptop = new Computer(chris, 2300.00, ...);
Computer notebook = new Computer(alex, 1950.00, ...);
Computer desktop = new Computer(chris, 799.00, ...);
Ownable[] stuff = {lic1, lic2, usedCar, laptop, notebook, desktop};
checkItems(stuff, chris);
// code to determine the value of the items Chris needs to insure
}