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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); } ______________________ }

 Which of the following statements regarding static methods is true?

Consider the following code snippet: public class Vehicle { private String manufacturer; . . . public void setVehicleClass(double numberAxles) { . . . } } If a Motorcycle class is created as a subclass of the Vehicle class, which of the following statements is correct?

Which of the following is a good indicator that a class is overreaching and trying to accomplish too much?

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?

Which of the following statements is true regarding method parameters in Java?

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

Which of the following most likely indicates that you have chosen a good name for your class?

Which of the following represents a good strategy regarding cohesion and class dependencies?

Which of the following statements accurately captures the process of learning?