On May 14, 1:07 pm, miga <[email protected]> wrote:
> On May 14, 6:59 am, "* ^ *" <[email protected]> wrote:
>
> > I cannot seem to propagate the throws clause up the calling method.
> > Why?
>
> > The relevant code fragments are as below:
> > class WorldCupCountries{
> > public WorldCupCountries() throws URISyntaxException{
> > doSelectionNDisplay();
> > }
> > private void doSelectionNDisplay() throws URISyntaxException{
> > URL dirURL=getClass().getResource(path);
> > File dir=new File(dirURL.toURI());
> > }
>
> > }
>
> > public class Main {
> > public static void main(String[] args) throws URISyntaxException{
> > SwingUtilities.invokeLater(new Runnable(){
> > public void run() {
> > // Next line is the source of the error.
> > new WorldCupCountries();
> > }
> > });
> > }
>
> > }
>
> > Exception thrown: Exception in thread "AWT-EventQueue-0"
> > java.lang.RuntimeException: Uncompilable source code - unreported
> > exception java.net.URISyntaxException; must be caught or declared to
> > be thrown.
> > But I have declared it should be thrown by main(). All input is
> > greatly appreciated. Thank you.
>
> You have thrown it, but you never have caught it. That's why finally
> it is the java runtime machine which throws it.
> See here the graphics, very explicitly (don't bother the text, it is
> in French).
>
> http://www.commentcamarche.net/contents/java/javaexc.php3
Thank you for your input and provided link. But, I an still not
clear.
I include a somewhat similar code below, but this one runs:
public class CopyTextFile {
// main() just specify IOException. But NetBeans compiles and run.
No complaint.
public static void main(String args[]) throws IOException {
copyFile(inFile, outFile);
}
public static void copyFile(File fromFile, File toFile) throws
IOException {
// Code that might throw an IOException.
BufferedReader reader = new BufferedReader(new FileReader
(fromFile));
BufferedWriter writer = new BufferedWriter(new FileWriter
(toFile));
}
}
In both examples, main() specify a checked exception. But in the
previous example, NetBeans will not compile nor run. In this example,
compiles and runs. Why?
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