Catching an exception and ignoring it !!!

I was wondering is it possible to catch an NullPointerException and ignore it without the error popping up??
I

Oh well ... look i my array is fine ... i was only typing an example of a fake array .. i know i forgot to include i < ... if you know how to catch and ignore the error the please tell me ... I am not some one who can't write an array...
Sorry for a typo on array.
// there is a try right above there before my other code ... it is a long code to list everything (no point )
for (int i = 0; i < C.length; i++)
         JOptionPane.showMessageDialog(null,
                                      C.viewAllCustomers(),
"Customer accounts",
JOptionPane.INFORMATION_MESSAGE);
// and here is one of my catchs which is way at the bottom
catch (NullPointerException npe ) {
JOptionPane.showMessageDialog(null, "Invalid account typed",
"Account error",
JOptionPane.ERROR_MESSAGE);

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