JAVA-Exception handling örnek

// Fig. 11.3: DivideByZeroWithExceptionHandling.java
// Handling ArithmeticExceptions and InputMismatchExceptions.
import java.util.InputMismatchException;
import java.util.Scanner;

public class DivideByZeroWithExceptionHandling
{
   public static int quotient(int numerator, int denominator)  throws Exception
   {return numerator / denominator;} // possible division by zero 
   public static void main(String[] args)
   {
      Scanner scanner = new Scanner(System.in);
      boolean continueLoop = true; // determines if more input is needed
      int error=0;
      do
      { 
         try { // read two numbers and calculate quotient
            System.out.print("Please enter an integer numerator: ");
            int numerator = scanner.nextInt();
            System.out.print("Please enter an integer denominator: ");
         
             int denominator = scanner.nextInt();
             System.out.println("evrything is ok");
             System.out.println("Result="+ quotient(numerator, denominator) );
             continueLoop = false; // input successful; end looping
           
             }

     
         catch (InputMismatchException inputMismatchException)
         {
            System.err.printf("%nException: %s%n",inputMismatchException);
            scanner.nextLine(); // discard input so user can try again
            System.out.println("You must enter integers. Please try again.");
         }
     
            catch (ArithmeticException arithmeticException) {
            System.err.printf("%nException happened: %s%n", arithmeticException);
            System.out.printf("Zero is an invalid denominator. Please try again.");
         }
     
         catch (Exception e) { System.err.printf("%nException: %s%n", e);         }
         finally{ System.out.println("process complited="+error++);  }
       
      } while (continueLoop);

     while(true)
    {
      System.out.println("running");
    }
   
   }
 
}