Hello everyone,

  I am trying to release windowing resource after a try-catch and found
that calling System.exit(0) inside finally may hide the an uncaught
exception. See example below.

  What is the *right way* to use finally in this case?

--lc

PS.
(1) Problem with putting System.exit(0) at the end is that the JFrame is not
properly released when an uncaught exception (e.g. divide by zero) is
generated.
(2) Now if I move System.exit(0) inside finally clause, then JFrame is
released OK but the uncaught exception is not even reported!

import javax.swing.*;
public class FinallyTest extends JFrame {

  FinallyTest(String title) {
      super(title);
      JLabel l = new JLabel("Calculates Quotient of 2 Numbers....");
      getContentPane().add(l);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setSize(400,100);
      setVisible(true);
  }

  public static void main( String args[] )
  {
     String s1, s2;
     int number1, number2, quotient;
     JFrame f = new FinallyTest("Test Finally Clause");
     try {
       s1 = JOptionPane.showInputDialog( "Enter integer numerator" );
       s2 = JOptionPane.showInputDialog( "Enter integer denominator" );
       number1 = Integer.parseInt( s1 );
       number2 = Integer.parseInt( s2 );
       quotient = number1 / number2;
       JOptionPane.showMessageDialog(null, "The quotient is " + quotient,
"Results", JOptionPane.PLAIN_MESSAGE );
     }
     catch (NumberFormatException e) {
       JOptionPane.showMessageDialog(null, "Invalid data! Bye!", "Invalid
data", JOptionPane.ERROR_MESSAGE);
     }
/*
     catch (ArithmeticException e) {
        JOptionPane.showMessageDialog(null, "Exception: "  + e + "! Bye!",
"Arithmetic Exception", JOptionPane.ERROR_MESSAGE);
     }
*/
     finally{
        // System.exit(0);
     }
     System.exit(0);       // Should do this in the finally clause???
  }
}