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re PR libgcj/1758 (java.util package lacks TreeMap)

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* java/util/TreeMap.java: New file.
        * java/util/TreeSet.java: New file.
        * Makefile.am: Add TreeMap and TreeSet. Enable WeakHashMap.
        * Makefile.in: Rebuilt.
        * java/util/HashSet.java (clone): Use constructor instead of calling
        clone on itself.
        * java/util/SortedSet.java: Sync with classpath.
        * java/util/HashMap.java (hash): Use if statement instead of ternary,
        for clarity.
	Resolves PR libgcj/1758.
	Resolves PR java/1684.

From-SVN: r39657
This commit is contained in:
Bryce McKinlay
2001-02-14 04:44:21 +00:00
committed by Bryce McKinlay
parent cbc59f0118
commit a142a99626
8 changed files with 1781 additions and 24 deletions
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libjava/java/util/HashMap.java
+11 -10
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@@ -60,8 +60,8 @@ import java.io.ObjectOutputStream;
* @author Jon Zeppieri
* @author Jochen Hoenicke
* @author Bryce McKinlay
* @version $Revision: 1.3 $
* @modified $Id: HashMap.java,v 1.3 2000/12/17 09:15:51 bryce Exp $
* @version $Revision: 1.4 $
* @modified $Id: HashMap.java,v 1.4 2000/12/21 02:00:15 bryce Exp $
*/
public class HashMap extends AbstractMap
implements Map, Cloneable, Serializable
@@ -500,7 +500,10 @@ public class HashMap extends AbstractMap
/** Return an index in the buckets array for `key' based on its hashCode() */
private int hash(Object key)
{
return (key == null ? 0 : Math.abs(key.hashCode() % buckets.length));
if (key == null)
return 0;
else
return Math.abs(key.hashCode() % buckets.length);
}
/** Return an Entry who's key and value equal the supplied Map.Entry.
@@ -611,15 +614,13 @@ public class HashMap extends AbstractMap
}
/**
* a class which implements the Iterator interface and is used for
* iterating over HashMaps;
* this implementation is parameterized to give a sequential view of
* keys, values, or entries; it also allows the removal of elements,
* as per the Javasoft spec.
* Iterate over HashMap's entries.
* This implementation is parameterized to give a sequential view of
* keys, values, or entries.
*
* @author Jon Zeppieri
* @version $Revision: 1.3 $
* @modified $Id: HashMap.java,v 1.3 2000/12/17 09:15:51 bryce Exp $
* @version $Revision: 1.4 $
* @modified $Id: HashMap.java,v 1.4 2000/12/21 02:00:15 bryce Exp $
*/
class HashIterator implements Iterator
{