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Consider the following code snippet: public class Vehicle { . . . public void setVehicleAttributes() { . . . } } public class Auto extends Vehicle { . . . public void setVehicleAttributes() { . . . } } Which of the following statements is correct?

Consider the following code snippet: public interface Measurable { double getMeasure(); ____________ double sum(Measurable[] objects) { // implementation to compute the sum of the Measurable objects } } Which of the following completes the interface declaration correctly?

Select an appropriate expression to complete the following code segment, which is designed to print a message if the string stored in name is the first element of the players linked list. LinkedList players = new LinkedList(); // code to add elements to the linked list if ______________________________________ { System.out.print(name + ” is the first player on the list.”); }

Consider the method powerOfTwo shown below: public boolean powerOfTwo(int n) { if (n == 1) // line #1 { return true; } else if (n % 2 == 1) // line #2 { return false; } else { return powerOfTwo(n / 2); // line #3 } } What is the best interpretation of line #1?

Which of the following describes an immutable class?

 Which of the following statements regarding static methods is true?

Select an appropriate expression to complete the following method, which is designed to return the number of elements in the parameter array numbers.  If a value appears more than once, it should be counted exactly once. public static int countElementsOnce(int[] numbers) { Set values = new HashSet(); for (int num: numbers) { values.add(num); } ______________________ }

Consider the following class: public class Stock implements Comparable { private String name; private double price; // other methods go here public int compareTo(Object otherObject) { Stock otherStock = (Stock) otherObject; __________________________________; } } Which is the best statement to use to complete the compareTo() method?

Consider the following code snippet: public class Vehicle { . . . public void setVehicleClass(double numberAxles) { . . . } } public class Motorcycle extends Vehicle { . . . public void setModelName(String model) { . . . } public void setVehicleClass(double numberAxles) { . . . } } Which of the following statements is NOT correct?

It is common for certain classes to keep track of how many times certain events have occurred over the life of an object. This is done using