6 files changed, 15 insertions, 3 deletions
diff --git a/libjava/java/util/GregorianCalendar.java b/libjava/java/util/GregorianCalendar.java
index d293790..9e73131 100644
--- a/libjava/java/util/GregorianCalendar.java
+++ b/libjava/java/util/GregorianCalendar.java
@@ -89,6 +89,8 @@ public class GregorianCalendar extends Calendar {
     3600000 /* DST_OFFSET */
   };
 
+  private static final long serialVersionUID = -8125100834729963327L;
+
   public GregorianCalendar ()
   {
     this(null, null);
diff --git a/libjava/java/util/Properties.java b/libjava/java/util/Properties.java
index 2f7a251..6360b99 100644
--- a/libjava/java/util/Properties.java
+++ b/libjava/java/util/Properties.java
@@ -33,6 +33,8 @@ public class Properties extends Hashtable
 {
   protected Properties defaults;
 
+  private static final long serialVersionUID = 4112578634029874840L;
+
   public String getProperty (String propName)
     {
       return getProperty (propName, null);
diff --git a/libjava/java/util/Random.java b/libjava/java/util/Random.java
index e4bac59..5ed4532 100644
--- a/libjava/java/util/Random.java
+++ b/libjava/java/util/Random.java
@@ -26,15 +26,17 @@ import java.io.Serializable;
 public class Random implements Serializable
 {
   /* Used by next() to hold the state of the pseudorandom number generator */
-  protected long seed;
+  private long seed;
 
   /* Used by nextGaussian() to hold a precomputed value */
   /* to be delivered by that method the next time it is called */
-  protected double nextNextGaussian;
+  private double nextNextGaussian;
 
   /* Used by nextGaussian() to keep track of whether it is has precomputed */
   /* and stashed away the next value to be delivered by that method */
-  protected boolean haveNextNextGaussian = false;
+  private boolean haveNextNextGaussian = false;
+
+  private static final long serialVersionUID = 3905348978240129619L;
 
   public Random()
   {
diff --git a/libjava/java/util/Stack.java b/libjava/java/util/Stack.java
index c7cb1c0..963513e 100644
--- a/libjava/java/util/Stack.java
+++ b/libjava/java/util/Stack.java
@@ -71,4 +71,6 @@ public class Stack extends Vector
 
     return -1;
   }
+
+  private static final long serialVersionUID = 1224463164541339165L;
 }
diff --git a/libjava/java/util/TimeZone.java b/libjava/java/util/TimeZone.java
index 02296d9..0145d72 100644
--- a/libjava/java/util/TimeZone.java
+++ b/libjava/java/util/TimeZone.java
@@ -30,6 +30,8 @@ public abstract class TimeZone implements java.io.Serializable, Cloneable
 
   private static TimeZone zoneDefault;
 
+  private static final long serialVersionUID = 3581463369166924961L;
+
   public TimeZone ()
   {
   }
diff --git a/libjava/java/util/Vector.java b/libjava/java/util/Vector.java
index 347d0ab..81178bf 100644
--- a/libjava/java/util/Vector.java
+++ b/libjava/java/util/Vector.java
@@ -61,6 +61,8 @@ public class Vector implements Cloneable, Serializable
   /* The buffer in which elements of this vector are stored */
   protected Object[] elementData;
 
+  private static final long serialVersionUID = -2767605614048989439L;
+
   public Vector()
   {
     this(10, 0);