If you google for "java generics", the first few results give good links.
There's a tutorial here: http://java.sun.com/j2se/1.5/pdf/generics-tutorial.pdf HTH Paul seven.reeds wrote: > Here is the java newbie again. Just when I was thinking I had the > vaugest handle on things up pops parameterized types. The GWT 1.5 > Serializable docs say that the "@gwt.typeArgs" is depreciated in favor > of parameterized types. I'm not seeing a definative guide to using > them though. > > In my case, in a 1.4 app I was using: > > package edu.uiuc.itg.client; > > import java.util.HashMap; > import java.util.Map; > > public class QueryParameters > { > Map map = new HashMap(); > > public QueryParameters() > { > String search = getQueryString(); > if ((search != null) && (search.length() > 0)) > { > String[] nameValues = search.substring(1).split("&"); > for (int i = 0; i < nameValues.length; i++) > { > String[] pair = nameValues[i].split("="); > map.put(pair[0], pair[1]); > } > } > } > ... > > This is almost an exact copy of code found in these discussions for > getting access to query parameters. I do not recall if the sample > code used typeArgs but this worked as-is in 1.4. > > I am now trying to move this to 1.5 and am told be Eclipse that > "HashMap is a raw type. References to generic type HashMap<K,V> should > be parameterized". Same thing for "Map". > > I have seen one or two similar threads here but the magic seems to be > happening off-screen. It seems to me that the examples in the other > threds are still using typeArgs. I'm not seeing the difference. > > Do you have pointers to simple explanations of what I should be doing > with parameterized types? > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
