optimizations to IntPairMap.java

[sbp.git] / src / edu / berkeley / sbp / util / EmptyIterator.java

diff --git a/src/edu/berkeley/sbp/util/EmptyIterator.java b/src/edu/berkeley/sbp/util/EmptyIterator.java
index 3c6d197..4a65433 100644 (file)
--- a/src/edu/berkeley/sbp/util/EmptyIterator.java
+++ b/src/edu/berkeley/sbp/util/EmptyIterator.java
@@ -1,7 +1,10 @@
+// Copyright 2006-2007 all rights reserved; see LICENSE file for BSD-style license
+

 package edu.berkeley.sbp.util;
 import java.util.*;
 package edu.berkeley.sbp.util;
 import java.util.*;

+import java.io.*;

 
 

-public final class EmptyIterator<T> implements Iterable<T>, Iterator<T> {
+public final class EmptyIterator<T> implements Iterable<T>, Iterator<T>, Serializable {

     public void        remove()   { throw new Error(); }
     public boolean     hasNext()  { return false; }
     public T           next()     { throw new Error(); }
     public void        remove()   { throw new Error(); }
     public boolean     hasNext()  { return false; }
     public T           next()     { throw new Error(); }