1 files changed, 12 insertions, 12 deletions
diff --git a/java/com/google/gerrit/entities/ChangeMessage.java b/java/com/google/gerrit/entities/ChangeMessage.java
index cb56c31797..609b54c9ed 100644
--- a/java/com/google/gerrit/entities/ChangeMessage.java
+++ b/java/com/google/gerrit/entities/ChangeMessage.java
@@ -16,7 +16,7 @@ package com.google.gerrit.entities;
 
 import com.google.auto.value.AutoValue;
 import com.google.gerrit.common.Nullable;
-import java.sql.Timestamp;
+import java.time.Instant;
 import java.util.Objects;
 
 /**
@@ -40,40 +40,40 @@ public final class ChangeMessage {
     public abstract String uuid();
   }
 
-  protected Key key;
+  private Key key;
 
   /** Who wrote this comment; null if it was written by the Gerrit system. */
-  @Nullable protected Account.Id author;
+  @Nullable private Account.Id author;
 
   /** When this comment was drafted. */
-  protected Timestamp writtenOn;
+  private Instant writtenOn;
 
   /**
    * The text left by the user or Gerrit system in template form, that is free of Gerrit User
    * Identifiable Information and can be persisted in data storage.
    */
-  @Nullable protected String message;
+  @Nullable private String message;
 
   /** Which patchset (if any) was this message generated from? */
-  @Nullable protected PatchSet.Id patchset;
+  @Nullable private PatchSet.Id patchset;
 
   /** Tag associated with change message */
-  @Nullable protected String tag;
+  @Nullable private String tag;
 
   /** Real user that added this message on behalf of the user recorded in {@link #author}. */
-  @Nullable protected Account.Id realAuthor;
+  @Nullable private Account.Id realAuthor;
 
-  protected ChangeMessage() {}
+  private ChangeMessage() {}
 
   public static ChangeMessage create(
-      final ChangeMessage.Key k, @Nullable Account.Id a, Timestamp wo, @Nullable PatchSet.Id psid) {
+      final ChangeMessage.Key k, @Nullable Account.Id a, Instant wo, @Nullable PatchSet.Id psid) {
     return create(k, a, wo, psid, /*messageTemplate=*/ null, /*realAuthor=*/ null, /*tag=*/ null);
   }
 
   public static ChangeMessage create(
       final ChangeMessage.Key k,
       @Nullable Account.Id a,
-      Timestamp wo,
+      Instant wo,
       @Nullable PatchSet.Id psid,
       @Nullable String messageTemplate,
       @Nullable Account.Id realAuthor,
@@ -103,7 +103,7 @@ public final class ChangeMessage {
     return realAuthor != null ? realAuthor : getAuthor();
   }
 
-  public Timestamp getWrittenOn() {
+  public Instant getWrittenOn() {
     return writtenOn;
   }