JButton and exception problem

Question

Hi all,
I created a JButton, named open _DB, and add an ActionListener to this. I want that when I click the button the methods in the loop executed (see below for code). However, I always get exceptions. How can I catch these exceptions?
If I use a try-catch loop I got the error:
ModelClipTest.java:559: ';' expected
public void actionPerformed(ActionEvent e)
ModelClipTest.java:559: missing method body, or declare abstract
public void actionPerformed(ActionEvent e)
How can I solve this problem. Can anybody help me?
Thanks
Murat
//CODE
open_DB.addActionListener
(new ActionListener()
public void actionPerformed(ActionEvent e)
try
ifcdemo = new IFC_Demo();
ifcdemo.execute();
IFC_RelFillsElement_Query.query_fill(ifcdemo);
IFC_RelVoidsElement_Query.query_void_ids(ifcdemo);
IFC_BuildingStorey_Query.query_buildingstorey(ifcdemo);
} //CLOSE TRY
catch(Exception ex)
System.out.println("Exception caught");
System.out.println(":-(");
} //CLOSE CATCH
);

Answer 1

yes, sorry. However, I still get these exceptions for the methods inside.
What should I do to get rid of these exceptions?
Thanks.
ModelClipTest.java:579: unreported exception java.lang.Throwable; must be caught or declared to be thrown
                              IFC_RelFillsElement_Query.query_fill(ifcdemo);
ModelClipTest.java:580: unreported exception java.lang.Throwable; must be caught or declared to be thrown
                              IFC_RelVoidsElement_Query.query_void_ids(ifcdemo);
ModelClipTest.java:582: unreported exception java.lang.Throwable; must be caught or declared to be thrown
                              IFC_BuildingStorey_Query.query_buildingstorey(ifcdemo);