import java.util.Scanner; public class BMI2 { public static void main(String args[]) { Scanner input = new Scanner(System.in); double gewicht = 67.0; double grosse = 1.67; System.out.print("Gewicht = "); if(input.hasNextDouble()) { gewicht = input.nextDouble(); } System.out.print("Große = "); if(input.hasNextDouble()) { grosse = input.nextDouble(); } System.out.println("BMI: " + (gewicht/ (grosse*grosse))); } }