Exception handling question

Hi,

I have written a tool in java. To run the tool I do:

MyTool tool = new MyTool();
tool.process();

In my code there is risk that code will throw IOException since it
will not be able to read a file. Or it can be a
TransformerConfigurationException in my xsl transformer. If a step
fails I would like stop continuing the processing since all other
further steps will be failing.

I am thinking of doing something like:

try {
MyTool tool = new MyTool();
tool.process();
} catch (MyToolException mte){
   mte.printStackTrace();
   System.exit(0);
}

Example of code in tool that gives a IOException:

 private static void copy(String from, String to) {
        try {
            File f1 = new File(from);
            File f2 = new File(to);
            InputStream in = new FileInputStream(f1);
            // For Overwrite the file.
            OutputStream out = new FileOutputStream(f2);

            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
            in.close();
            out.close();
            System.out.println("File copied from: " + f1 + " to: " +
f2);
        } catch (FileNotFoundException ex) {

          throw new MyToolException("File Could not be found");
        } catch (IOException e) {
            throw new MyToolException("File Could not be read");
        }
    }

Or is there an other way to do this? I am using jdk1.4.2 ( and I am
stuck with it :-( ).

br,

//mike