On Aug 10, 1:10 am, JKid314159 <[email protected]> wrote:
> Hi Miga:
>
> I tried the following code instead of the system out print.
>
> // Retrieve an iterator to the hashset:
> Iterator iter = hs.iterator();
>
> // Extract elements from iterator. Note that the elements may not
> // follow the order in which they are added to HashSet.
> while(iter.hasNext())
> {
> System.out.print(iter.next());
> iter.remove();
> }
>
> But it does not work!
Try this:
// Display the HashSet
System.out.println("Contents of myHashSet after adding
objects: " + myHashSet);
// Remove one by one the objects from the set printing them
for (Iterator<Object> it = myHashSet.iterator(); it.hasNext
();) {
Object object = it.next();
System.out.println("Removing object: " + object);
it.remove();
}
// Check that the collection is empty now
System.out.println("Contents of my HashSet after removing
objects:" + myHashSet);
}
The println on a HashSet returns an array of the objects like this:
[Grade: 9.8 Name: Henry, Grade: 17.5 Name: Anna, 2, 5, 8, Second
string, First String]
provided that the toString method in the myOwnClass has been overrided
to print "Grade: " + valueofgrade + " Name: " + valueofname
You'll notice also that println on a hashset does exactly the same
work as an iterator on it, and println on each object retrieved by the
iterator. Hence, as an abysmally lazy programmer, I prefere to use
println on the HashSet (;-))
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/javaprogrammingwithpassion?hl=en
-~----------~----~----~----~------~----~------~--~---
