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Java Object Oriented Programming using Classes and Interfaces

A person has a name and a height in centimeters. Implement a dataset to process a collection of Person objects. Display the average height and the name of the tallest person.

Use the following class in your solution:
/**
This class represents a person's name and height
*/
public class Person
{
private String name;
private double height;

/**
Constructs a Person object
@param aName the name of the person
@param aHeight the height of the person
*/
public Person(String aName, double aHeight)
{
name = aName;
height = aHeight;
}

/**
Gets the name of the person
@return name the person's name
*/
public String getName()
{
return name;
}

/**
Gets the height of the person
@return height the person's height
*/
public double getHeight()
{
return height;
}
}

Use the following class as your tester class:
/**
This program tests the measuring of Person objects.
*/
public class PersonTester
{
public static void main(String[] args)
{
. . .

DataSet data = . . .

data.add(new Person("Joe", 183));
data.add(new Person("Chrissy", 158));
data.add(new Person("Bobby", 175));

double avg = . . .
Person max = . . .

System.out.println("Average height: " + avg);
System.out.println("Expected: 172");
System.out.println("Name of tallest person: " + max.getName());
System.out.println("Expected: Joe");
}
}

DO NOT MODIFY THE FOLLOWING:

/**
Computes the average of a set of data values.
*/
public class DataSet
{
private double sum;
private Object maximum;
private int count;
private Measurer measurer;

/**
Constructs an empty data set with a given measurer.
@param aMeasurer the measurer that is used to measure data values
*/
public DataSet(Measurer aMeasurer)
{
sum = 0;
count = 0;
maximum = null;
measurer = aMeasurer;
}

/**
Adds a data value to the data set.
@param x a data value
*/
public void add(Object x)
{
sum = sum + measurer.measure(x);
if (count == 0
|| measurer.measure(maximum) < measurer.measure(x))
maximum = x;
count++;
}

/**
Gets the average of the added data.
@return the average or 0 if no data has been added
*/
public double getAverage()
{
if (count == 0) return 0;
else return sum / count;
}

/**
Gets the largest of the added data.
@return the maximum or 0 if no data has been added
*/
public Object getMaximum()
{
return maximum;
}
}

DO NOT MODIFY THE FOLLOWING
/**
Describes any class whose objects can measure other objects.
*/
public interface Measurer
{
/**
Computes the measure of an object.
@param anObject the object to be measured
@return the measure
*/
double measure(Object anObject);
}

DO NOT MODIFY THE FOLLOWING
/**
This class represents a person's name and height
*/
public class Person
{
private String name;
private double height;

/**
Constructs a Person object
@param aName the name of the person
@param aHeight the height of the person
*/
public Person(String aName, double aHeight)
{
name = aName;
height = aHeight;
}

/**
Gets the name of the person
@return name the person's name
*/
public String getName()
{
return name;
}

/**
Gets the height of the person
@return height the person's height
*/
public double getHeight()
{
return height;
}
}.

Solution Summary

The solution modifies existing code to implement a dataset that can process person objects to find average height, tallest person, etc. in Java. Attached as zip file.

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