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Saturday, 10 September 2016

Chapter 10 Exercise 2, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

10.2  (The BMI class) Add the following new constructor in the BMI class:

public BMI(String name, int age, double weight, double feet, double inches)


public class BMI {
    private String name;
    private int age;
    private double weight; // in pounds
    private double height; // in inches
    private double feet;
    private double inches;
    public static final double KILOGRAMS_PER_POUND = 0.45359237;
    public static final double METERS_PER_INCH = 0.0254;


    public BMI(String name, int age, double weight, double feet, double inches) {
        this.name = name;
        this.age = age;
        this.weight = weight;
        this.feet = feet;
        this.inches = inches;
        this.height = feet * 12 + inches;
    }

    public BMI(String name, int age, double weight, double height) {
        this(name, age,weight, height / 12, height % 12);
    }

    public BMI(String name, double weight, double height) {
        this(name, 20, weight, height);
    }


    public double getBMI() {
        double bmi = weight * KILOGRAMS_PER_POUND /
                ((height * METERS_PER_INCH) * (height * METERS_PER_INCH));
        return Math.round(bmi * 100) / 100.0;
    }

    public String getStatus() {
        double bmi = getBMI();
        if (bmi < 18.5)
            return "Underweight";
        else if (bmi < 25)
            return "Normal";
        else if (bmi < 30)
            return "Overweight";
        else
            return "Obese";
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public double getWeight() {
        return weight;
    }

    public double getHeight() {
        return height;
    }

    public double getInches() {
        return inches;
    }

    public void setInches(double inches) {
        this.inches = inches;
    }

    public double getFeet() {
        return feet;
    }

    public void setFeet(double feet) {
        this.feet = feet;
    }
 }

public class Exercise_02 {

    public static void main(String[] args) {

        BMI p = new BMI("Luiz", 22, 175, 5, 7);
        System.out.printf("Name: %s Age: %d weight: %.2f feet: %.2f inches: %.2f\n",
                p.getName(), p.getAge(), p.getWeight(), p.getFeet(), p.getInches());
    }


}

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