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TreeMap.java (nil): Made non-final.

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* java/util/TreeMap.java (nil): Made non-final.
	(clone): Create new nil node for copy.

From-SVN: r39736
This commit is contained in:
Bryce McKinlay 2001-02-16 02:25:24 +00:00 committed by Bryce McKinlay
parent 729338bb38
commit 5ace577564
2 changed files with 7 additions and 2 deletions
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3
libjava/ChangeLog
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@ -3,6 +3,9 @@
* java/util/TreeSet.java (clone): Made subclass safe, use
super.clone(), not new.
* java/util/TreeMap.java (clone): Likewise.
* java/util/TreeMap.java (nil): Made non-final.
(clone): Create new nil node for copy.
2001-02-14 Andrew Haley <aph@redhat.com>

6
libjava/java/util/TreeMap.java
View File

@ -56,7 +56,7 @@ import java.io.IOException;
*
* @author Jon Zeppieri
* @author Bryce McKinlay
* @modified $Id: TreeMap.java,v 1.2 2001/02/14 05:32:31 bryce Exp $
* @modified $Id: TreeMap.java,v 1.3 2001/02/16 01:49:40 bryce Exp $
*/
public class TreeMap extends AbstractMap
implements SortedMap, Cloneable, Serializable
@ -67,7 +67,7 @@ public class TreeMap extends AbstractMap
/** Sentinal node, used to avoid null checks for corner cases and make the
delete rebalance code simpler. Note that this must not be static, due
to thread-safety concerns. */
transient final Node nil = new Node(null, null);
transient Node nil = new Node(null, null);
/** The root node of this TreeMap */
transient Node root = nil;
@ -186,6 +186,8 @@ public class TreeMap extends AbstractMap
catch (CloneNotSupportedException x)
{
}
// Each instance must have a unique sentinal.
copy.nil = new Node(null, null);
copy.fabricateTree(size);
Node node = firstNode();