Features of a good testbench include: Messages for all tests that pass At least 90% code coverage Border cases and extreme values Test cases for all possible values Which XXX is the proper default constructor? public class Employee { private double mySalary; XXX public Employee(double salary) { mySalary = salary;} public Employee() { mySalary = 10000;} public Employee() { double mySalary = 10000;} private Employee() { mySalary = 10000;} Given a programmer-defined class called Person, what is output? Person barb = new Person (18); Person jessie = new Person (21); change (barb, jessie); System.out.println (barb.getAge()); public static void change (Person pl, Person p2) { pl = p2; } The memory location of barb 18 21 Error: null pointer exception Person barb = new Person (18); Person jessie new Person (21); change (barb, jessie); System.out.println (barb.getAge()); public static void change (Person pl, Person p2) { pl = p2; } The memory location of barb 18 21 Error: null pointer exception Given a programmer-defined class called Person, what is output? Person barb = new Person (18); Person jessie: = new Person (21); change (barb, jessie); System.out.println (barb.getAge()); public static void change (Person pl, Person p2) { pl = p2; The memory location of barb 18 21 Error: null pointer exception means to have a user interact with an item at a high-level. Data encapsulation Information hiding User interaction design Abstraction How many objects of type Car are created? Car mustang = new Car(); Car prius; int miles; Truck tundra = new Truck(); 0 1 2 3 The following program generates an error. Why? final int NUM ELEMENTS 5; int[] userVals = new int [NUM_ELEMENTS]; int i; uservals [0] 1; uservals [1] = 7; = uservals [2] = 4; = } = for (i = 0; i A static field___ is also called an instance variable is initialized in the constructor has global scope is accessed using an object name such as objectName.fieldName API is short for ______ Automated Program Instructions Applied Programming Implementation Authoring Program Instructions Application Programming Interface What is output? Item jar new Item(); Item ball = new Item(); System.out.println (Item.count); public class Item { public static int count public Item() { } 1 2 3 I count++; Error: syntax error = 1; Which is true? Garbage collection makes programs run faster Deallocated objects can be reclaimed by a programmer Garbage collection is managed automatically by the Java virtual machine An object is deallocated when its reference count decrements to one Which XXX method signature returns the student's GPA? public class Student { private double myGPA; private int myID; XXX } return myGPA; private double getGPA() public double getGPA() public int getGPA() double getGPA() The enhanced for loop__ reduces the number of iterations necessary to visit all elements of an array can be used to replace any regular for loop while yielding less code creates a copy of an existing array and iterates through the copy's elements prevents incorrectly accessing elements outside of an array's range } Which XXX method signature returns the student's GPA? public class Student { private double myGPA; private int myID; XXX } return myGPA; private double getGPA() Opublic double getGPA() public int getGPA()