diff --git a/icu4j/src/com/ibm/icu/dev/demo/impl/DemoApplet.java b/icu4j/src/com/ibm/icu/dev/demo/impl/DemoApplet.java
index 32cda7603dc..554cf9e04b2 100644
--- a/icu4j/src/com/ibm/icu/dev/demo/impl/DemoApplet.java
+++ b/icu4j/src/com/ibm/icu/dev/demo/impl/DemoApplet.java
@@ -1,6 +1,6 @@
 /*
  *******************************************************************************
- * Copyright (C) 1997-2004, International Business Machines Corporation and    *
+ * Copyright (C) 1997-2008, International Business Machines Corporation and    *
  * others. All Rights Reserved.                                                *
  *******************************************************************************
  */
@@ -11,6 +11,7 @@ import java.awt.*;
 import java.awt.event.*;
 
 public abstract class DemoApplet extends java.applet.Applet {
+    private static final long serialVersionUID = -8983602961925702071L;
     private Button   demoButton;
     private Frame    demoFrame;
     private static int demoFrameCount = 0;
diff --git a/icu4j/src/com/ibm/icu/text/DurationFormat.java b/icu4j/src/com/ibm/icu/text/DurationFormat.java
index 48b913c9d7f..cfa65a18d7e 100644
--- a/icu4j/src/com/ibm/icu/text/DurationFormat.java
+++ b/icu4j/src/com/ibm/icu/text/DurationFormat.java
@@ -1,6 +1,6 @@
 /*
  *******************************************************************************
- * Copyright (C) 2007, International Business Machines Corporation and         *
+ * Copyright (C) 2007-2008, International Business Machines Corporation and    *
  * others. All Rights Reserved.                                                *
  *******************************************************************************
  */
@@ -20,7 +20,9 @@ import com.ibm.icu.util.ULocale;
  * @provisional This API might change or be removed in a future release.
  */
 public abstract class DurationFormat extends UFormat {
-    
+
+    private static final long serialVersionUID = 1L;
+
     /**
      * Construct a duration format for the specified locale
      * @draft ICU 3.8
diff --git a/icu4j/src/com/ibm/icu/util/BasicTimeZone.java b/icu4j/src/com/ibm/icu/util/BasicTimeZone.java
index 4e7df322555..bf3c57a9af3 100644
--- a/icu4j/src/com/ibm/icu/util/BasicTimeZone.java
+++ b/icu4j/src/com/ibm/icu/util/BasicTimeZone.java
@@ -26,6 +26,8 @@ import com.ibm.icu.impl.Grego;
  */
 public abstract class BasicTimeZone extends TimeZone {
 
+    private static final long serialVersionUID = -3204278532246180932L;
+
     private static final long MILLIS_PER_YEAR = 365*24*60*60*1000L;
 
     /**
diff --git a/icu4j/src/com/ibm/icu/util/TimeZoneRule.java b/icu4j/src/com/ibm/icu/util/TimeZoneRule.java
index 78a7b3efac9..8688a95539f 100644
--- a/icu4j/src/com/ibm/icu/util/TimeZoneRule.java
+++ b/icu4j/src/com/ibm/icu/util/TimeZoneRule.java
@@ -21,6 +21,8 @@ import java.util.Date;
  */
 public abstract class TimeZoneRule implements Serializable {
 
+    private static final long serialVersionUID = 6374143828553768100L;
+
     private final String name;
     private final int rawOffset;
     private final int dstSavings;