(coll) The set returned by TreeMap.keySet should implement SortedSet

Name: rmT116609 Date: 08/26/2003


A DESCRIPTION OF THE PROBLEM :
I think that the Set returned by TreeMap.keySet should implement SortedSet, because it's actually a sorted Set.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
C:\java\src>java Test
Exception in thread "main" java.lang.ClassCastException: java.util.TreeMap$1
        at Test.main(Test.java:7)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.util.*;

public class Test {
    public static void main(String[] args) {
        TreeMap map=new TreeMap();
        map.put("Hello","World");
        SortedSet keySet=(SortedSet)map.keySet();
    }
}

---------- END SOURCE ----------

CUSTOMER WORKAROUND :
Directly use the methods of TreeMap.
(Incident Review ID: 164293)
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