Which of the following statements about superclasses and subclasses is true?

Consider the following code snippet: Vehicle aVehicle = new Auto(4,”gasoline”); String s = aVehicle.toString(); Assume that the Auto class inherits from the Vehicle class, and neither class has an implementation of the toString() method. Which of the following statements is correct?

Consider the following code snippet: Vehicle aVehicle = new Auto(); aVehicle.moveForward(200); Assume that the Auto class inherits from the Vehicle class, and both classes have an implementation of the moveForward method with the same set of parameters and the same return type. What determines which class’s moveForward method is to be executed?

Consider the definition of the Measurable interface and the code snippet defining the Inventory class: public interface Measurable { double getMeasure(); } public class Inventory implements Measurable { . . . public double getMeasure() { return onHandCount; } } Why is it necessary to declare getMeasure as public in the Inventory class?

Consider the following code snippet: Vehicle aVehicle = new Auto(); aVehicle.moveForward(200); Assume that the Auto class inherits from the Vehicle class, and both classes have an implementation of the moveForward method with the same set of parameters and the same return type. What determines which class’s moveForward method is to be executed?

Consider the following code snippet: import ____________________ import java.awt.event.ActionListener; /** An action listener that prints. */ public class ClickListener implements ActionListener { public void actionPerformed(ActionEvent event) { System.out.println(“I was clicked.”); } } Which of the following statements will complete this code?

To test whether an object belongs to a particular type, use

Consider the following code snippet: public static void sort(int[] a) { for (int i = 1; i < a.length; i++) { int next = a[i]; int j = i; while (j > 0 && a[j – 1] > next) { a[j] = a[j – 1]; j–; } a[j] = next; } } What sort algorithm is used in this code?

Complete the code fragment below, which is designed to throw an exception if String variable accountNumber has more than seven characters. if (accountNumber.length() > 7) { ___________________________________________ }

Which operations from the list data structure could be used to implement the push and pop operations of a stack data structure? I    addLast II   addFirst III  removeFirst