Question

I have run into a curious issue. I need to export some text to a file as a result of pressing a button in a GUI. I cannot, however, apply an IOException to the actionPerformed method of the AbstractAction that is called by the event. I am at a loss as to how to get around this.

Here is the export class:

import java.awt.event.*;
import java.lang.*;
import java.util.*;
import java.io.*;

public class ExportRunner
{
  public static void exportToFile(ArrayList<Locker> list) throws IOException
  {

  }
}

And the AbstractAction extension:

class Export extends AbstractAction
{
  public Export()
  {
    super("Export");
  }
  public void actionPerformed(ActionEvent e)
  {
    ExportRunner.exportToFile(list);
  }
}

Answer 1

First of all are you sure you want to re throw the exception or maybe is better to handle it and/or show a message to the user?

Option 1: re-throw the exception (ugly in my opinion):

public void actionPerformed(ActionEvent e) {
   try{
      ExportRunner.exportToFile(list);
   } catch(IOException ioex) {
      throw new RuntimeException(ioex);
    }
  }

Option 2: catch and handle it:

public void actionPerformed(ActionEvent e) {
   try{
      ExportRunner.exportToFile(list);
   } catch(IOException ioex) {
      handleItOrShowMessageToUser(ioex);
    }
 }