HeartRates.java

public class HeartRates{
	private String firstName;
	private String lastName;
	private String dateOfBirth;
	private int yearOfBirth;

public HeartRates (String firstName, String lastName, String dateOfBirth, int yearOfBirth){

		this.firstName = firstName;
		this.lastName = lastName;
		this.dateOfBirth = dateOfBirth;
		this.yearOfBirth = yearOfBirth; }

	public void setFirstName(String firstName){
		this.firstName = firstName; }
	
	public void setLastName(String lastName){
		this.lastName = lastName; }

	public void setDateOfBirth(String dateOfBirth){
		this.dateOfBirth = dateOfBirth; }

	public void setYearOfBirth(int yearOfBirth){
		this.yearOfBirth = yearOfBirth; }


	public String getFirstName(){
		return firstName; }

	public String getLastName(){
		return lastName; }

	public String getDateOfBirth(){
		return dateOfBirth; }
	
	public int getYearOfBirth(){
		return yearOfBirth; }
	
	public int getAgeInYears(){
		int ageInYears = 2023 - getYearOfBirth();
		return ageInYears; }

	public int getMaxHeartRate(){
		int maxHeartRate = 220 - getAgeInYears();
		return maxHeartRate; }

	public double getMinTargetHeartRate(){
		double minTargetHeartRate = (double) 0.5 * getMaxHeartRate();
		return minTargetHeartRate; }

	public double getMaxTargetHeartRate(){
		double maxTargetHeartRate = (double) 0.85 * getMaxHeartRate(); 
		return maxTargetHeartRate; }

}