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Groups > comp.lang.java.programmer > #8608

Re: Support Map<String, String> & Map<String, MyString>

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On Oct 6, 4:23 pm, Daniel Pitts <newsgroup.nos...@virtualinfinity.net>
wrote:
> On 10/6/11 1:02 PM, Lew wrote:> albert kao wrote:
> >> The following programs work but I like to combine MyComboBox&
> >> MyComboBox2 into one class so that both Map<String, String>  &
> >> Map<String, MyString>  data types are supported in the single combined
> >> class.
> >> How to do that?
>
> > Have 'MyString' implement 'CharSequence' and use a 'Map<String,CharSequence>'?
>
> Or, if you don't really care about the value type, use Map<String, ?> as
> the parameter type.
>
> public class MyComboBox {
>     public MyComboBox(Map<String, ?> data) {...};
>
> }
>
> If you *do* care about the type, then make your ComboBox generic:
>
> public class MyComboBox<V> {
>     public MyComboBox(Map<String, V> data) {...};
>
> }
>
> >> public class MyComboBox extends LangComboBox implements
> >> PropertyChangeListener {
> >>    protected EventListenerList listenerList = new EventListenerList();
> >>    private Set keySet = Collections.EMPTY_SET;
>
> > DO NOT USE RAW TYPES!
>
> Seconded.

Inside the MyComboBox constructor, is there a way to figure out
whether the type of value of the Map is String or MyString?

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Thread

Support Map<String, String> & Map<String, MyString> albert kao <albertkao3@gmail.com> - 2011-10-06 12:05 -0700
  Re: Support Map<String, String> & Map<String, MyString> Lew <lewbloch@gmail.com> - 2011-10-06 13:02 -0700
    Re: Support Map<String, String> & Map<String, MyString> Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-10-06 13:23 -0700
      Re: Support Map<String, String> & Map<String, MyString> albert kao <albertkao3@gmail.com> - 2011-10-06 14:07 -0700
        Re: Support Map<String, String> & Map<String, MyString> Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-10-06 15:42 -0700
          Re: Support Map<String, String> & Map<String, MyString> albert kao <albertkao3@gmail.com> - 2011-10-06 17:54 -0700
          Re: Support Map<String, String> & Map<String, MyString> albert kao <albertkao3@gmail.com> - 2011-10-06 18:09 -0700
    Re: Support Map<String, String> & Map<String, MyString> albert kao <albertkao3@gmail.com> - 2011-10-06 13:32 -0700
      Re: Support Map<String, String> & Map<String, MyString> Lew <lewbloch@gmail.com> - 2011-10-06 19:03 -0700
        Re: Support Map<String, String> & Map<String, MyString> albert kao <albertkao3@gmail.com> - 2011-10-06 20:33 -0700
  Re: Support Map<String, String> & Map<String, MyString> Roedy Green <see_website@mindprod.com.invalid> - 2011-10-07 02:41 -0700
    Re: Support Map<String, String> & Map<String, MyString> albert kao <albertkao3@gmail.com> - 2011-10-07 03:49 -0700
      Re: Support Map<String, String> & Map<String, MyString> Roedy Green <see_website@mindprod.com.invalid> - 2011-10-07 10:48 -0700

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