public class SentCon3 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
double input;
char choice;
System.out.println("**** Menu-Driven Temperature Converter*****");
System.out.println("only lowwer case is vaild");
System.out.print("Enter the value to beconverted==> ");
input = scan.nextDouble();
System.out.println("What is your choice?");
System.out.println("a)Fahrenheit to Celsius");
System.out.println("b)Celsius to Fahrenheit");
System.out.println("c)Kelvin to Celsius");
System.out.println("d)Celsius to Kelvin");
System.out.println("e)Kelvin to Fahrenheit");
System.out.println("f)Fahrenheit to Kelvin.");
System.out.print("Please enter your choice ==>");
choice = scan.next().charAt(0);
while (choice == 'a') {
System.out.println((input / 5) * 9 + 32);
break;
}
while (choice == 'b') {
System.out.println((input - 32) * 5 / 9);
break;
}
while (choice == 'c') {
System.out.println(input - 273.15);
break;
}
while (choice == 'd') {
System.out.println(input + 273.15);
break;
}
while (choice == 'e') {
System.out.println((input - 273.5) * 9 / 5 + 32);
break;
}
while (choice == 'f') {
System.out.println((input + 459.67) * 5 / 9);
break;
}
}
}
use while as if!!!!