Class MajorDemographics

Object

MajorDemographics

public class MajorDemographics
extends Object

Keeps track of the total count the gender demographic category for a major.

Field Summary

Fields

Modifier and Type	Field and Description
private int	femaleCount Counter for the number of female identifying students in a major.
private int	maleCount Counter for the number of male identifying students in a major.
private String	name Name of the major.
private int	nonBinaryCount Counter for the number of non-binary identifying students in a major.

Constructor Summary

Constructors

Constructor and Description
MajorDemographics(String name) Creates a new MajorDemographics object, setting the name to name.

Method Summary

Modifier and Type	Method and Description
void	addGenderDemographic(String gender) Increases the various gender demographic counts.
String	getName() Accessor for the name for the major
double[]	getPercents() Returns an array of decimal values (less than 1) of the various major counts.
static void	main(String[] args) Testing is important, and arguably, as MajorDemographics can be a self contained class it is very important to test for correctness.
String	toHtmlRow() Converts the college demographics to an html row (tr) element.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

name

private final String name

Name of the major. Needs to be unique, as it is used to find the major. Set in the constructor.

maleCount

private int maleCount

Counter for the number of male identifying students in a major.

femaleCount

private int femaleCount

Counter for the number of female identifying students in a major.

nonBinaryCount

private int nonBinaryCount

Counter for the number of non-binary identifying students in a major.

Constructor Detail

MajorDemographics

public MajorDemographics(String name)

Creates a new MajorDemographics object, setting the name to name.

Parameters:

name - the name of the major

Method Detail

getName

public String getName()

Accessor for the name for the major

Returns:

name

addGenderDemographic

public void addGenderDemographic(String gender)

Increases the various gender demographic counts.

• If M is passed in maleCount is incremented by one.
• Else If F is passed in femaleCount is incremented by one.
• If anything else is passed in nonBinaryCount is incremented by one.

Parameters:

gender - M/F/N as options for being passed into the method

getPercents

public double[] getPercents()

Returns an array of decimal values (less than 1) of the various major counts. So maleCount / total number of majors.

Watch out for accidentally returning all 0s due to integer division. Hint make total a double.

Returns:

Array in order of Male Percent, Female Percent, NonBinary Percent.

toHtmlRow

public String toHtmlRow()

Converts the college demographics to an html row (tr) element.

NEW to implement in p4 - remember to add tests to your main for it.

This method takes the percents and converts it to the string of format

 <tr><td>MALE_PERCENT</td><td>FEMALE_PERCENT</td></tr>
 

Implementation suggestions

• String.format was useful for getting the percent in a readable format. We used %.2f%% for the format string
• getPercents() was used to get them, to keep the code DRY

Returns:

a table row of the values.

See Also:

Tag.tr(String), Tag.td(String), getPercents()

main

public static void main(String[] args)

Testing is important, and arguably, as MajorDemographics can be a self contained class it is very important to test for correctness. Place your tests in the main, and make sure to gets getPercents()! Here are some example tests we used

    MajorDemographics major = new MajorDemographics("Basket Weaving");
    major.addGenderDemographic("M");
    major.addGenderDemographic("F");
    major.addGenderDemographic("N");
    major.addGenderDemographic("");

    System.out.println("TEST: " + Arrays.toString(major.getPercents()));
 

Parameters:

args - unused, but included for completeness