a. Construct the default constructor Program plan: Filename: “FitnessTracker.java” Import the header files in the program. Define the “FitnessTracker” class. Declare the required variables. Define of constructor Set the default values Get the local date Define “getActivity” method Return the activity Define “getMinutes” method Return the minutes. Define “getDate” method Return the date. Filename: “TestFitnessTracker.java” Define the “TestFitnessTracker” class. Define the main method. Create an object for “FitnessTracker” class. Display the result for exercise (a). Create an object for “LocalDate” class

Question

6. What is Race condition? How to prevent it? [2 marks] 7. How many synchronization methods do you know and compare the differences. [2 marks] 8. Explain what are the “mutual exclusion”, “deadlock”, “livelock”, and “eventual entry”, with the traffic intersection as an example like dinning philosophy. [2 marks] 9. For memory allocation, what are the difference between internal fragmentation and external fragmentation. Explain with an example. [2 marks] 10. How can the virtual memory map to the physical memory. Explain with an example. [2 marks]

Answer 1

Question

Chapter 4, Problem 3PE

Program Plan Intro

a.

Construct the default constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Program Plan Intro

b.

Construct the parameterized constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Create an object for “FitnessTracker” class.

Display the result for exercise (b).

Program Plan Intro

c.

Call the three parameter constructor

Program plan:

Filename: “FitnessTracker2.java”

Import the header files in the program.

Define the “FitnessTracker2” class.

Declare the required variables.

Define of constructor

Set the default values using “this” method.

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker2.java”

Define the “TestFitnessTracker2” class.

Define the main method.

Create an object for “FitnessTracker2” class.

Display the result for exercise (c).

Create an object for “LocalDate” class

Create an object for “FitnessTracker2” class.

Display the result for exercise (b).

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6. What is Race condition? How to prevent it? [2 marks] 7. How many synchronization methods do you know and compare the differences. [2 marks] 8. Explain what are the “mutual exclusion”, “deadlock”, “livelock”, and “eventual entry”, with the traffic intersection as an example like dinning philosophy. [2 marks] 9. For memory allocation, what are the difference between internal fragmentation and external fragmentation. Explain with an example. [2 marks] 10. How can the virtual memory map to the physical memory. Explain with an example. [2 marks]

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a database with multiple tables from attributes as shown above that are in 3NF, showing PK, non-key attributes, and FK for each table? Assume the tables are already in 1NF. [Hint: 3 tables will result after deducing 1NF -> 2NF -> 3NF]

Answer 2

Question

Chapter 4, Problem 3PE

Program Plan Intro

a.

Construct the default constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Program Plan Intro

b.

Construct the parameterized constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Create an object for “FitnessTracker” class.

Display the result for exercise (b).

Program Plan Intro

c.

Call the three parameter constructor

Program plan:

Filename: “FitnessTracker2.java”

Import the header files in the program.

Define the “FitnessTracker2” class.

Declare the required variables.

Define of constructor

Set the default values using “this” method.

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker2.java”

Define the “TestFitnessTracker2” class.

Define the main method.

Create an object for “FitnessTracker2” class.

Display the result for exercise (c).

Create an object for “LocalDate” class

Create an object for “FitnessTracker2” class.

Display the result for exercise (b).

Expert Solution & Answer

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Answer 3

Question

Chapter 4, Problem 3PE

Program Plan Intro

a.

Construct the default constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Program Plan Intro

b.

Construct the parameterized constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Create an object for “FitnessTracker” class.

Display the result for exercise (b).

Program Plan Intro

c.

Call the three parameter constructor

Program plan:

Filename: “FitnessTracker2.java”

Import the header files in the program.

Define the “FitnessTracker2” class.

Declare the required variables.

Define of constructor

Set the default values using “this” method.

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker2.java”

Define the “TestFitnessTracker2” class.

Define the main method.

Create an object for “FitnessTracker2” class.

Display the result for exercise (c).

Create an object for “LocalDate” class

Create an object for “FitnessTracker2” class.

Display the result for exercise (b).

Expert Solution & Answer

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Answer 4

Question

Chapter 4, Problem 3PE

Program Plan Intro

a.

Construct the default constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Program Plan Intro

b.

Construct the parameterized constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Create an object for “FitnessTracker” class.

Display the result for exercise (b).

Program Plan Intro

c.

Call the three parameter constructor

Program plan:

Filename: “FitnessTracker2.java”

Import the header files in the program.

Define the “FitnessTracker2” class.

Declare the required variables.

Define of constructor

Set the default values using “this” method.

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker2.java”

Define the “TestFitnessTracker2” class.

Define the main method.

Create an object for “FitnessTracker2” class.

Display the result for exercise (c).

Create an object for “LocalDate” class

Create an object for “FitnessTracker2” class.

Display the result for exercise (b).

Expert Solution & Answer

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Answer 5

Chapter 4, Problem 3PE

Program Plan Intro

a.

Construct the default constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Program Plan Intro

b.

Construct the parameterized constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Create an object for “FitnessTracker” class.

Display the result for exercise (b).

Program Plan Intro

c.

Call the three parameter constructor

Program plan:

Filename: “FitnessTracker2.java”

Import the header files in the program.

Define the “FitnessTracker2” class.

Declare the required variables.

Define of constructor

Set the default values using “this” method.

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker2.java”

Define the “TestFitnessTracker2” class.

Define the main method.

Create an object for “FitnessTracker2” class.

Display the result for exercise (c).

Create an object for “LocalDate” class

Create an object for “FitnessTracker2” class.

Display the result for exercise (b).

Answer 6

Chapter 4, Problem 3PE

Program Plan Intro

a.

Construct the default constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Answer 7

Chapter 4, Problem 3PE

Program Plan Intro

a.

Construct the default constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Answer 8

Program Plan Intro

b.

Construct the parameterized constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Create an object for “FitnessTracker” class.

Display the result for exercise (b).

Answer 9

Program Plan Intro

b.

Construct the parameterized constructor

Program plan:

Filename: “FitnessTracker.java”

Import the header files in the program.

Define the “FitnessTracker” class.

Declare the required variables.

Define of constructor

Set the default values

Get the local date

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker.java”

Define the “TestFitnessTracker” class.

Define the main method.

Create an object for “FitnessTracker” class.

Display the result for exercise (a).

Create an object for “LocalDate” class

Create an object for “FitnessTracker” class.

Display the result for exercise (b).

Answer 10

Program Plan Intro

c.

Call the three parameter constructor

Program plan:

Filename: “FitnessTracker2.java”

Import the header files in the program.

Define the “FitnessTracker2” class.

Declare the required variables.

Define of constructor

Set the default values using “this” method.

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker2.java”

Define the “TestFitnessTracker2” class.

Define the main method.

Create an object for “FitnessTracker2” class.

Display the result for exercise (c).

Create an object for “LocalDate” class

Create an object for “FitnessTracker2” class.

Display the result for exercise (b).

Answer 11

Program Plan Intro

c.

Call the three parameter constructor

Program plan:

Filename: “FitnessTracker2.java”

Import the header files in the program.

Define the “FitnessTracker2” class.

Declare the required variables.

Define of constructor

Set the default values using “this” method.

Define of parameterized constructor

Set the values.

Define “getActivity” method

Return the activity

Define “getMinutes” method

Return the minutes.

Define “getDate” method

Return the date.

Filename: “TestFitnessTracker2.java”

Define the “TestFitnessTracker2” class.

Define the main method.

Create an object for “FitnessTracker2” class.

Display the result for exercise (c).

Create an object for “LocalDate” class

Create an object for “FitnessTracker2” class.

Display the result for exercise (b).

Answer 12

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Answer 13

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Answer 23

Ch. 4 - Prob. 1RQ Ch. 4 - Prob. 2RQ Ch. 4 - Prob. 3RQ Ch. 4 - Prob. 4RQ Ch. 4 - Prob. 5RQ Ch. 4 - Prob. 6RQ Ch. 4 - Prob. 7RQ Ch. 4 - Prob. 8RQ Ch. 4 - Prob. 9RQ Ch. 4 - Prob. 10RQ

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