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Chapter 1 Answers to Concept Questions 1. (a) Analyze the task (understand the problem task, identify objects and actions) 2. Background information describes the setting, or environment in which objects will perform actions. Object-actions identifies which objects will perform specific […]

Chapter 10 Answers to Concept Questions (e) String 2. (a) boolean (b) char (c) double (d) int (e) char (f) double (g) int 3. String is not a primitive data type. 4. (a) value stores an Integer, but true is […]

Chapter 11 Answers to Concept Questions 1. From the perspective of the user: A traditional sequential program runs in a pre-programmed 2. At least three threads. 3. End conditions are generally stated as rules that determine when the game ends. […]

Chapter 12 Answers to Concept Questions 1. The center of an object in Alice 3 is typically located at the object’s base, not the center of mass. So, if the object is to be rotated around the center of mass, […]

Chapter 13 Answers to Concept Questions 2. (a) SJoint (b) SJoint [ ] 3. (a) A joint configuration is a specific arrangement of the joints — in essence, a pattern. A joint configuration can be but is not necessarily an […]

Chapter 14 Answers to Concept Questions 2. An example shown here declares the array to be of type Quadruped. Note: The array could have been declared with an ancestor class, for example SModel. 3. Not at runtime – the array, […]

Chapter 15 Answers to Concept Questions 1. Alice uses the term “item” and Java uses the term “element” for an object or value stored in an indexed position in an array. In common usage, the terms are interchangeable. 2. The […]

Chapter 16 Answers to Concept Questions 4. The COMBINE multiple event policy allows the event listener to fire again, even though the listener may have already fired and the procedure that was called to respond to that previous event has […]

Chapter 2 Answers for Concept Questions 1. The purpose of set design is to plan the visual aspects of the scene, including relative positioning 2. Assuming the fish is currently positioned with its “belly” downward, use a one-step turn procedure […]

Chapter 3 Answers to Concept Questions 1. A design algorithm provides a plan for implementing the code. 2. Two kinds of tabs in the Alice Code editor: 3. A procedure is an action that can be performed by an object […]

Chapter 4 Answers to Concept Questions 1. To implement is to write statements that translate algorithm steps into program code that, when 2. Design is the process of planning a solution for a given problem. Implementation is the process of […]

Chapter 5 Answers to Concept Questions 1. 4. a) together b) in order c) in order d) together e) in order f) together g) in order 5. Group 1: do in order, sequential, series (all perform one action at a […]

Chapter 6 Answers to Concept Questions 8. Table: 1. Stepwise refinement is the repeated use of decomposition to break down a complex task into simpler and simpler steps. 2. C. Long procedures are difficult to debug and difficult to revise […]

Chapter 7 Answers to Concept Questions 1. In NetBeans, each class has one tab that contains a text-based definition of all components in the class, including declaration statements for properties, constructors, and methods (both procedural and functional). 2. The main […]

Chapter 8 Answers to Concept Questions 4. In Alice, a property declaration statement is typically for the purpose of adding an object to the scene or creating a variable to store a value. In each case, a name and a […]

Chapter 9 Answers to Concept Questions 3. a. DecimalNumber (Double, in Java) b. WholeNumber (Integer, in Java) c. WholeNumber d. DecimalNumber e. Boolean f. TextString (String, in Java) g. TextString 4. a. 22 b. 5 c. 5.5 d. 1 e. […]