how this line of code can know that there is more input needed?:
- boolean continueLoop = true;
the original code is :
- public class DivideByZeroWithExceptionHandling
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{
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// demonstrates throwing an exception when a divide-by-zero occurs
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public static int quotient( int numerator, int denominator )
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throws ArithmeticException
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{
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return numerator / denominator; // possible division by zero
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} // end method quotient
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public static void main( String args[] )
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{
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Scanner scanner = new Scanner( System.in ); // scanner for input
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boolean continueLoop = true; // determines if more input is needed
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do
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{
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try // read two numbers and calculate quotient
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{
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System.out.print( "Please enter an integer numerator: " );
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int numerator = scanner.nextInt();
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System.out.print( "Please enter an integer denominator: " );
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int denominator = scanner.nextInt();
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int result = quotient( numerator, denominator );
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System.out.printf( "\nResult: %d / %d = %d\n", numerator,
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denominator, result );
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continueLoop = false; // input successful; end looping
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} // end try
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catch ( InputMismatchException inputMismatchException )
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{
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System.err.printf( "\nException: %s\n",
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inputMismatchException );
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scanner.nextLine(); // discard input so user can try again
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System.out.println(
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"You must enter integers. Please try again.\n" );
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} // end catch
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catch ( ArithmeticException arithmeticException )
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{
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System.err.printf( "\nException: %s\n", arithmeticException );
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System.out.println(
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"Zero is an invalid denominator. Please try again.\n" );
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} // end catch
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} while ( continueLoop ); // end do...while
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} // end main
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} // end class DivideByZeroWithExceptionHandling
