Exercise.java

/*
Exercie 2.83
*/
public class Book
{
    // The fields.
    private String author;
    private String title;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle)
        {
        author = bookAuthor;
        title = bookTitle;
        }
    public String getAuthor()
    {
        return author;
    }
    public String getTitle()
    {
        return title;
    }
}

/*
Exercise 2.84
*/
public class Book
{
    // The fields.
    private String author;
    private String title;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle)
        {
        author = bookAuthor;
        title = bookTitle;
        }
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
}

/*
Exercise 2.85
*/
public class Book
{
    // The fields.
    private String author;
    private String title;
    private int pages;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle, int bookPages)
    {
        author = bookAuthor;
        title = bookTitle;
        pages = bookPages;
    }
       
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
   
    public int getPages()
    {
        return pages;
    }
   
}

/*
Exercise 2.86
*/
public class Book
{
    // The fields.
    private String author;
    private String title;
    private int pages;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle, int bookPages)
    {
        author = bookAuthor;
        title = bookTitle;
        pages = bookPages;
    }
       
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
   
    public int getPages()
    {
        return pages;
    }
   
    public void printDetails()
    {
        System.out.println("Title  :" + title);
        System.out.println("Author  :" + author);
        System.out.println("Page(s)  :" + pages);
    }
   
}

/*
Exercise 2.87
*/
import java.util.Scanner;
 
public class Book
{
    Scanner scan = new Scanner(System.in);
    // The fields.
    private String author;
    private String title;
    private int pages;
    private String refNumber;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle, int bookPages)
    {
        author = bookAuthor;
        title = bookTitle;
        pages = bookPages;
        refNumber = "";
    }
       
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public String getRefNumber()
    {
        return refNumber;
    }
   
    public int getPages()
    {
        return pages;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
   
    public void setRefNumber(String ref)
    {
        refNumber = ref;
    }
   
    public void printDetails()
    {
        System.out.println("Title  :" + title);
        System.out.println("Author  :" + author);
        System.out.println("Page(s)  :" + pages);
    }
   
}

/*
Exercise 2.88
*/
import java.util.Scanner;
 
public class Book
{
    Scanner scan = new Scanner(System.in);
    // The fields.
    private String author;
    private String title;
    private int pages;
    private String refNumber;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle, int bookPages)
    {
        author = bookAuthor;
        title = bookTitle;
        pages = bookPages;
        refNumber = "";
    }
       
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public String getRefNumber()
    {
        return refNumber;
    }
   
    public int getPages()
    {
        return pages;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
   
    public void setRefNumber(String ref)
    {
        refNumber = ref;
    }
   
    public void printDetails()
    {
        System.out.println("Title  :" + title);
        System.out.println("Author  :" + author);
        System.out.println("Page(s)  :" + pages);
        if (refNumber.length() != 0)
            {
                System.out.println("Ref. Num    :" + refNumber);
            }
        else System.out.println("Ref. Num    :ZZZ");
    }
   
}

/*
Exercise 2.89
*/
import java.util.Scanner;
 
public class Book
{
    Scanner scan = new Scanner(System.in);
    // The fields.
    private String author;
    private String title;
    private int pages;
    private String refNumber;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle, int bookPages)
    {
        author = bookAuthor;
        title = bookTitle;
        pages = bookPages;
        refNumber = "";
    }
       
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public String getRefNumber()
    {
        return refNumber;
    }
   
    public int getPages()
    {
        return pages;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
   
    public void setRefNumber(String ref)
    {
        if (ref.length() >= 3)
        {
            refNumber = ref;
            System.out.println("Set success!");
        }
        else System.out.println("Set failed.");
    }
   
    public void printDetails()
    {
        System.out.println("Title  :" + title);
        System.out.println("Author  :" + author);
        System.out.println("Page(s)  :" + pages);
        if (refNumber.length() != 0)
            {
                System.out.println("Ref. Num    :" + refNumber);
            }
        else System.out.println("Ref. Num    :ZZZ");
    }
   
}

/*
Exercise 2.90
*/
import java.util.Scanner;
 
public class Book
{
    Scanner scan = new Scanner(System.in);
    // The fields.
    private String author;
    private String title;
    private int pages;
    private String refNumber;
    private int borrowed;
    private boolean courseText;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle, int bookPages, boolean bookCourseText)
    {
        author = bookAuthor;
        title = bookTitle;
        pages = bookPages;
        refNumber = "";
        borrowed = 0;
        courseText = bookCourseText;
    }
       
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public String getRefNumber()
    {
        return refNumber;
    }
   
    public int getPages()
    {
        return pages;
    }
   
    public int getBorrowed()
    {
        return borrowed;
    }
   
    public boolean isCourseText()
    {
        return courseText;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
   
    public void setRefNumber(String ref)
    {
        if (ref.length() >= 3)
        {
            refNumber = ref;
            System.out.println("Set success!");
        }
        else System.out.println("Set failed.");
    }
   
    public void borrow()
    {
        borrowed = borrowed + 1;
    }
   
    public void printDetails()
    {
        System.out.println("Title  :" + title);
        System.out.println("Author  :" + author);
        System.out.println("Page(s)  :" + pages);
        if (refNumber.length() != 0)
            {
                System.out.println("Ref. Num    :" + refNumber);
            }
        else System.out.println("Ref. Num    :ZZZ");
        System.out.println("Borrowed    :" + borrowed);
       
    }
   
}

/*
Exercise 2.91
*/
import java.util.Scanner;
 
public class Book
{
    Scanner scan = new Scanner(System.in);
    // The fields.
    private String author;
    private String title;
    private int pages;
    private String refNumber;
    private int borrowed;
    private boolean courseText;
    /**
    * Set the author and title fields when this object
    * is constructed.
    */
    public Book(String bookAuthor, String bookTitle, int bookPages, boolean bookCourseText)
    {
        author = bookAuthor;
        title = bookTitle;
        pages = bookPages;
        refNumber = "";
        borrowed = 0;
        courseText = bookCourseText;
    }
       
    public String getAuthor()
    {
        return author;
    }
   
    public String getTitle()
    {
        return title;
    }
   
    public String getRefNumber()
    {
        return refNumber;
    }
   
    public int getPages()
    {
        return pages;
    }
   
    public int getBorrowed()
    {
        return borrowed;
    }
   
    public boolean isCourseText()
    {
        return courseText;
    }
   
    public void printAuthor()
    {
        System.out.println(author);
    }
   
    public void printTitle()
    {
        System.out.println(title);
    }
   
    public void setRefNumber(String ref)
    {
        if (ref.length() >= 3)
        {
            refNumber = ref;
            System.out.println("Set success!");
        }
        else System.out.println("Set failed.");
    }
   
    public void borrow()
    {
        borrowed = borrowed + 1;
    }
   
    public void printDetails()
    {
        System.out.println("Title  :" + title);
        System.out.println("Author  :" + author);
        System.out.println("Page(s)  :" + pages);
        if (refNumber.length() != 0)
            {
                System.out.println("Ref. Num    :" + refNumber);
            }
        else System.out.println("Ref. Num    :ZZZ");
        System.out.println("Borrowed    :" + borrowed);
       
    }
   
}

/*
Exercise 2.92
*/
public class Heater
{
    // instance variables - replace the example below with your own
    private double temperature;
 
    /**
     * Constructor for objects of class Heater
     */
    public Heater()
    {
        // initialise instance variables
        temperature = 15.0;
    }
 
    public void warmer()
    {
        temperature = temperature + 5.0;
    }
   
    public void cooler()
    {
        temperature = temperature - 5.0;
    }
   
    public double getTemperature()
    {
        return temperature;
    }
}

/*
Exercise 2.93
*/
public class Heater
{
    // instance variables - replace the example below with your own
    private double temperature;
    private double min;
    private double max;
    private double increment;
    /**
     * Constructor for objects of class Heater
     */
    public Heater(double temperatureMin, double temperatureMax)
    {
        temperature = 15.0;
        min = temperatureMin;
        max = temperatureMax;
        increment = 5.0;
    }
 
    public void warmer()
    {
        if (temperature + increment > max)
        {
            System.out.println("Set failed.");
        }
        else
        {
            temperature = temperature + 5.0;
            System.out.println("Set success!");
        }
    }
   
    public void cooler()
    {
        if (temperature + increment < min)
        {
            System.out.println("Set failed.");
        }
        else
        {
            temperature = temperature - 5.0;
            System.out.println("Set success!");
        }
    }
   
    public void setIncrement(double inc)
    {
        if (inc < 0)
        System.out.println("Set failed.");
        else increment = inc;
    }
   
    public double getTemperature()
    {
        return temperature;
    }
}