MyBMI

import javax.swing.JOptionPane;

public class BMI {

    public static void main(String[] args) {

        //Getting input
        String response = JOptionPane.showInputDialog(null,
                "Enter your height in inches");
        double height = Double.parseDouble(response);
        response = JOptionPane.showInputDialog(null,
                "Enter your weight in pounds");
        double weight = Double.parseDouble(response);

        //Calculation

        double bodyIndex;
        bodyIndex = (weight * 703) / (height * height);

        //Conditionals
        String result;
        if (bodyIndex < 16) {
            result = "Invalid";
        } else if (bodyIndex >= 16 && bodyIndex < 18.5) {
            result = "underweight";
        } else if (bodyIndex >= 18.5 && bodyIndex < 25) {
            result = "Healthy";
        } else {
            result = "Overweight";
        }
        JOptionPane.showMessageDialog(null,
                String.format("Height: %,.2f in\n" +
                        "Weight: %,.2f lbs\n" +
                        "BMI: %,.2f\n" +
                        "Classification: %s\n", height, weight, bodyIndex, result));
        }

}