What does the following code do?

Question

```
1 try
2 {
3 double myDouble1 =
4 Double.parseDouble( double1JTextField.getText() );
5 double myDouble2 =
6 Double.parseDouble( double2JTextField.getText() );
7 double result = myDouble1 * myDouble2;
8 resultJTextField.setText( String.valueOf( result ) );
9 }
10 catch( NumberFormatException exception )
11 {
12 JOptionPane.showMessageDialog( this,
13 "Please enter decimal numbers",
14 "NumberFormatException occurs", JOptionPane.ERROR_MESSAGE );
15 }
/code}

Answer 1

This code multiplies two doubles if both inputs in double1JTextField and double2JTextField are indeed decimal numbers, including integers. Otherwise it displays an error message dialog that informs the user to enter decimal numbers in the JTextFields.