If you want it more generic, it should be Iterable rather than Iterator.
On Tue, Jan 12, 2016 at 6:34 AM, sampath kumar <[email protected]> wrote:
> You Can still achieve enhanced for loop using iterator by using following
> modification.
>
> I apologize if this thread going in different context. We can go with
> either List or Set depending on the Requirement.
>
> *Code Snippet:*
>
> import java.util.HashSet;
> import java.util.Iterator;
> import java.util.Set;
>
> public class PluginIterator implements Iterable<PluginIterator.Plugin> {
>
> static class Plugin {
> String name;
> Plugin(String name) {
> this.name = name;
> }
> public String toString() {
> return "Plugin{" + name + "}";
> }
> }
>
> Set<Plugin> set = new HashSet<Plugin>();
>
> public void addPenguin(Plugin p) {
> set.add(p);
> }
>
> public Iterator<Plugin> getPlugins() {
> return set.iterator();
> }
>
> public Iterator<Plugin> iterator() {
> return getPlugins();
> }
>
> public static void main(String args[]) {
> PluginIterator pluginIterators = new PluginIterator();
> Plugin plugin1 = new Plugin("Plugin-1");
> Plugin plugin2 = new Plugin("Plugin-2");
> Plugin plugin3 = new Plugin("Plugin-3");
> Plugin plugin4 = new Plugin("Plugin-4");
> pluginIterators.addPenguin(plugin1);
> pluginIterators.addPenguin(plugin2);
> pluginIterators.addPenguin(plugin3);
> pluginIterators.addPenguin(plugin4);
> for (Plugin p : pluginIterators) {
> System.out.println(p);
> }
> }
> }
>
> On Tue, Jan 12, 2016 at 10:24 AM, Gary Gregory <[email protected]>
> wrote:
>
>> I dislike this iterator business very much, and you can't use it in a for
>> each loop.
>>
>> Gary
>>
>> On Mon, Jan 11, 2016 at 8:46 PM, sampath kumar <[email protected]>
>> wrote:
>>
>>> How about this, Unmodifiable Iterator
>>>
>>> Iterator<String> getPluginPackages();
>>>
>>> On Tue, Jan 12, 2016 at 9:50 AM, Gary Gregory <[email protected]>
>>> wrote:
>>>
>>>> List<String> getPluginPackages();
>>>>
>>>> G
>>>>
>>>> On Mon, Jan 11, 2016 at 8:12 PM, Paul Benedict <[email protected]>
>>>> wrote:
>>>>
>>>>> Thu can only use Set if you have a notion of equality and comparison.
>>>>> Do you for this collection?
>>>>> On Jan 11, 2016 9:48 PM, "Gary Gregory" <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> Well, not really, I'd like to express whether the collection allows
>>>>>> for duplicates or not, if not, use a set.
>>>>>>
>>>>>> Gary
>>>>>>
>>>>>> On Mon, Jan 11, 2016 at 7:08 PM, Matt Sicker <[email protected]>
>>>>>> wrote:
>>>>>>
>>>>>>> Even a Collection works well for this.
>>>>>>>
>>>>>>>
>>>>>>> On Monday, 11 January 2016, Gary Gregory <[email protected]>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> On Mon, Jan 11, 2016 at 5:19 PM, Ralph Goers <
>>>>>>>> [email protected]> wrote:
>>>>>>>>
>>>>>>>>> It is returning a List already. Does it really matter much?
>>>>>>>>>
>>>>>>>>
>>>>>>>> It is not indeed critical. It's just a finer point of declaring the
>>>>>>>> intention of the data model, either duplicates are allowed and
>>>>>>>> expected, or
>>>>>>>> not.
>>>>>>>>
>>>>>>>> Gary
>>>>>>>>
>>>>>>>>>
>>>>>>>>> Ralph
>>>>>>>>>
>>>>>>>>> On Jan 11, 2016, at 6:04 PM, Gary Gregory <[email protected]>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>> Should APIs like:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> org.apache.logging.log4j.core.config.Configuration.getPluginPackages()
>>>>>>>>>
>>>>>>>>> really return a List instead of a Set?
>>>>>>>>>
>>>>>>>>> Gary
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> E-Mail: [email protected] | [email protected]
>>>>>>>>> Java Persistence with Hibernate, Second Edition
>>>>>>>>> <http://www.manning.com/bauer3/>
>>>>>>>>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/>
>>>>>>>>> Spring Batch in Action <http://www.manning.com/templier/>
>>>>>>>>> Blog: http://garygregory.wordpress.com
>>>>>>>>> Home: http://garygregory.com/
>>>>>>>>> Tweet! http://twitter.com/GaryGregory
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> E-Mail: [email protected] | [email protected]
>>>>>>>> Java Persistence with Hibernate, Second Edition
>>>>>>>> <http://www.manning.com/bauer3/>
>>>>>>>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/>
>>>>>>>> Spring Batch in Action <http://www.manning.com/templier/>
>>>>>>>> Blog: http://garygregory.wordpress.com
>>>>>>>> Home: http://garygregory.com/
>>>>>>>> Tweet! http://twitter.com/GaryGregory
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Matt Sicker <[email protected]>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> E-Mail: [email protected] | [email protected]
>>>>>> Java Persistence with Hibernate, Second Edition
>>>>>> <http://www.manning.com/bauer3/>
>>>>>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/>
>>>>>> Spring Batch in Action <http://www.manning.com/templier/>
>>>>>> Blog: http://garygregory.wordpress.com
>>>>>> Home: http://garygregory.com/
>>>>>> Tweet! http://twitter.com/GaryGregory
>>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> E-Mail: [email protected] | [email protected]
>>>> Java Persistence with Hibernate, Second Edition
>>>> <http://www.manning.com/bauer3/>
>>>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/>
>>>> Spring Batch in Action <http://www.manning.com/templier/>
>>>> Blog: http://garygregory.wordpress.com
>>>> Home: http://garygregory.com/
>>>> Tweet! http://twitter.com/GaryGregory
>>>>
>>>
>>>
>>>
>>> --
>>> Regards,
>>> Sampath
>>>
>>
>>
>>
>> --
>> E-Mail: [email protected] | [email protected]
>> Java Persistence with Hibernate, Second Edition
>> <http://www.manning.com/bauer3/>
>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/>
>> Spring Batch in Action <http://www.manning.com/templier/>
>> Blog: http://garygregory.wordpress.com
>> Home: http://garygregory.com/
>> Tweet! http://twitter.com/GaryGregory
>>
>
>
>
> --
> Regards,
> Sampath
>
--
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*Mikael Ståldal*
Senior software developer
*Magine TV*
[email protected]
Grev Turegatan 3 | 114 46 Stockholm, Sweden | www.magine.com
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