Enter the numerator:
Rats
If the division didn't work, you entered bad data.
Exception in thread "main" java.lang.NumberFormatException: Rats
        at java.lang.Integer.parseInt(Integer.java:409)
        at java.lang.Integer.parseInt(Integer.java:458)
        at FinallyPractice.main(FinallyPractice.java:16)

A good answer might be:

The try{} block threw a NumberFormatException, but there was no catch{} block for it. So: (1) the finally block executed, and then (2) the execption was thrown to the caller (in this case the Java run time system), which (3) printed the last four lines.

Stack Trace

The last four lines are called a stack trace. Later you will see how to print them without stopping the program. Here is a section of the program: 

    try
    {
      System.out.println("Enter the numerator:");
      ...
      System.out.println("Enter the divisor:");
      ...
      System.out.println( num + " / " + div + " is " + (num/div) );
    }

    catch (ArithmeticException ex )
    {
      System.out.println("You can't divide " + num + " by " + div);
    }

    finally
    {
      System.out.println("If the division didn't work, you entered bad data." );
    }

    System.out.println("Good-by" );

Here are some further examples of output:

Output 1: 
Enter the numerator:
26
Enter the divisor:
4
26 / 4 is 6
If the division didn't work, you entered bad data.
Good-by
Output 2: 
Enter the numerator:
26
Enter the divisor:
0
You can't divide 26 by 0
If the division didn't work, you entered bad data.
Good-by
Output 3: 
Enter the numerator:
26
Enter the divisor:
Zero
If the division didn't work, you entered bad data.
Exception in thread "main" java.lang.NumberFormatException: Zero
        at java.lang.Integer.parseInt(Integer.java:409)
        at java.lang.Integer.parseInt(Integer.java:458)
        at FinallyPractice.main(FinallyPractice.java:19)

QUESTION 18:

In which outputs did the try{} block execute without an exception?
In which outputs did the try{} block throw an ArithmeticException?
In which outputs did the try{} block throw an unhandled exception
(one with no catch{} block)?
In which outputs did the finally{} block execute?