Re: [jdt-core-dev] Problem with generics, Map.Entry

[Eyðun Nielsen <jdt-core-dev@xxxxxxxxxxxx>]

Hi,

I'm using Eclipse 3.1M1 and i'm getting the same error. But if I import 
java.util.Map.Entry then the error goes away.

e.g.:

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

public class CheetahBug {
  public static void main(String[] args) {
     Map<String, String> map = new HashMap<String, String>();
    
     map.put("foo", "bar");
    
     Iterator<Entry<String,String>> i = map.entrySet().iterator();
     while (i.hasNext()) {
        Entry<String, String> entry = i.next();
        System.out.println(entry.getKey() + ", " + entry.getValue());
     }
  }
}

Regards,
Eyðun

David Hovemeyer wrote:

> Howdy,
>
> Please accept my apologies if this is the wrong mailing list,
> or if this is a known problem.
>
> I'm using Eclipse 3.0 with the org.eclipse.jdt.core and
> org.eclipse.jdt.ui plugins upgraded to HEAD, and the
> org.eclipse.jdt.debug plugin upgraded to JDK_1_5.  (I built these
> yesterday.)  My hope is to be able to use Eclipse to work on a
> fairly large project that uses generics, but no other 1.5 language
> features.
>
> Almost all of the project built fine within Eclipse (!).  However,
> I'm getting compile errors in places where entrySet().iterator()
> is called on a Map with type parameters.  The following
> code (which compiles fine using 1.5 beta2 javac) demonstrates the
> problem:
>
> package edu.umd.cs.daveho;
>
> import java.util.HashMap;
> import java.util.Iterator;
> import java.util.Map;
>
> public class CheetahBug {
> 	public static void main(String[] args) {
> 		Map<String, String> map = new HashMap<String, String>();
> 		
> 		map.put("foo", "bar");
> 		
> 		// Error reported on the following line
> 		Iterator<Map.Entry<String,String>> i = map.entrySet().iterator();
> 		while (i.hasNext()) {
> 			Map.Entry<String, String> entry = i.next();
> 			System.out.println(entry.getKey() + ", " + entry.getValue());
> 		}
> 	}
> }
>
> There are a few other places where Eclipse flags errors on things
> that compile fine in 1.5.  I'll try to distill these as small test
> cases.
>
> -Dave
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