Hi Rafał,
On Apr 5, 11:18 pm, Rafał Laczek <rafal_lac...@wp.pl> wrote:
> Hi,
>
> I have a problem to display MyOwnClass objects.
> Set myhs=new HashSet();
> String msg = new String();
> myhs.add(new String ("Rafał"));
> myhs.add(new String ("Edyta"));
> myhs.add(new MyOwnClass("Ewelinka", 9));
> myhs.add(new MyOwnClass("Ola", 16));
> myhs.add(new Integer (5));
> myhs.add(new Integer (6));
> myhs.add(new Integer (7));
>
> for (Iterator iter = myhs.iterator(); iter.hasNext(); ){
> System.out.println(msg+" HashSet: "+iter.next()+"\n");
You've created an empty String for msg and as I see, there is no
assignment.
You are trying to print with System.out.println.
msg + " HashSet: " is a String to which you add the object returned by
iter.next().
So the system tries to convert this object to a String and calls the
toString() method.
If you do not redefine, the toString() ob object will be printed.
HTH
Ewald
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