(Re)Throwing
When a method throws an exception, the calling method must handle that exception. To handle it, it can try/catch it or throw the exception again. In this exercise, you will see how a calling method rethrows an exception.
This exercise is part of the course
Data Types and Exceptions in Java
Exercise instructions
- Call the
dineOut()method with 9 people triggering theException. - Since the
dineOut()method is not handling the exception, rethrow theException. - Since the
splitBill()method is not handling the exception, throw theException.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
public class RethrowingExample {
public static void main(String[] args) {
try {
// Trigger the exception by calling dineOut with 9 people
dineOut(____, 50.00);
} catch (Exception e) {
System.out.println("Atempting to divide bill with too many diners");
}
}
// Rethrow the Exception
public static void dineOut(int people, double bill) ____ ____ {
double each = splitBill(bill, people);
System.out.println("Bill for each person: " + each);
}
// Throw the Exception
public static double splitBill(double bill, int people) ____ ____ {
if (people < 3) {
return bill / people;
} else {
throw new Exception();
}
}
}