Programming Forums > Application Development > Java

elford · Dec 26th, 2005, 4:46 PM

I've written an application that runs fine from a console, so I am now building a GUI on top of it.

When the user clicks on the "Run" button I provide, the GUI takes 3 strings (paths and file names) the user inputted and passes them off to the rest of the program. The methods that handle the files can throw FileNotFound and IO Exceptions.

Here is the method that passes control from the GUI to the rest of the program:

(Toggle Plain Text)

private void runWidgetSelected(SelectionEvent evt) throws IOException {
	try{
		BandTrack.runFromGUI(rosterLoc.getText(), swipeLoc.getText(),
			exportLoc.getText());
		}
		catch (IOException e){
			e.printStackTrace();
		}
	}

The problem that I am having is with the Listener that checks to see if the Run button has been selected:

(Toggle Plain Text)

run = new Button(this, SWT.PUSH | SWT.CENTER);
run.setText("Run!");
run.setBounds(280, 147, 63, 21);
run.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) throws IOException {
		runWidgetSelected(evt);
	}
});

Eclipse has that block underlined with the message "Exception IOException is not compatible with throws clause in SelectionAdapter.widgetSelected
(SelectionEvent)."

What does that mean? What is the way that it should be fixed?

Dec 26th, 2005, 4:46 PM	#1
elford Programmer Join Date: Nov 2005 Posts: 35 Rep Power: 0	Exception troubles dealing with GUIs I've written an application that runs fine from a console, so I am now building a GUI on top of it. When the user clicks on the "Run" button I provide, the GUI takes 3 strings (paths and file names) the user inputted and passes them off to the rest of the program. The methods that handle the files can throw FileNotFound and IO Exceptions. Here is the method that passes control from the GUI to the rest of the program: (Toggle Plain Text) private void runWidgetSelected(SelectionEvent evt) throws IOException { try{ BandTrack.runFromGUI(rosterLoc.getText(), swipeLoc.getText(), exportLoc.getText()); } catch (IOException e){ e.printStackTrace(); } } private void runWidgetSelected(SelectionEvent evt) throws IOException { try{ BandTrack.runFromGUI(rosterLoc.getText(), swipeLoc.getText(), exportLoc.getText()); } catch (IOException e){ e.printStackTrace(); } } The problem that I am having is with the Listener that checks to see if the Run button has been selected: (Toggle Plain Text) run = new Button(this, SWT.PUSH \| SWT.CENTER); run.setText("Run!"); run.setBounds(280, 147, 63, 21); run.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent evt) throws IOException { runWidgetSelected(evt); } }); run = new Button(this, SWT.PUSH \| SWT.CENTER); run.setText("Run!"); run.setBounds(280, 147, 63, 21); run.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent evt) throws IOException { runWidgetSelected(evt); } }); Eclipse has that block underlined with the message "Exception IOException is not compatible with throws clause in SelectionAdapter.widgetSelected (SelectionEvent)." What does that mean? What is the way that it should be fixed?

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Programming Forums > Application Development > Java

Exception troubles dealing with GUIs