diff --git a/src/java.base/share/classes/java/lang/BaseVirtualThread.java b/src/java.base/share/classes/java/lang/BaseVirtualThread.java
index 535c5311714..6d5ed4235e7 100644
--- a/src/java.base/share/classes/java/lang/BaseVirtualThread.java
+++ b/src/java.base/share/classes/java/lang/BaseVirtualThread.java
@@ -27,7 +27,7 @@ package java.lang;
 /**
  * Base class for virtual thread implementations.
  */
-sealed abstract class BaseVirtualThread extends Thread
+abstract sealed class BaseVirtualThread extends Thread
         permits VirtualThread, ThreadBuilders.BoundVirtualThread {
 
     /**
diff --git a/src/java.base/share/classes/sun/net/dns/ResolverConfiguration.java b/src/java.base/share/classes/sun/net/dns/ResolverConfiguration.java
index ecd2dddf357..05feee47bc2 100644
--- a/src/java.base/share/classes/sun/net/dns/ResolverConfiguration.java
+++ b/src/java.base/share/classes/sun/net/dns/ResolverConfiguration.java
@@ -37,7 +37,7 @@ import java.util.List;
  * @since 1.4
  */
 
-public sealed abstract class ResolverConfiguration permits ResolverConfigurationImpl {
+public abstract sealed class ResolverConfiguration permits ResolverConfigurationImpl {
 
     private static final Object lock = new Object();
 
diff --git a/src/java.base/share/classes/sun/nio/ch/FileChannelImpl.java b/src/java.base/share/classes/sun/nio/ch/FileChannelImpl.java
index f53508859ae..2c14fa9687e 100644
--- a/src/java.base/share/classes/sun/nio/ch/FileChannelImpl.java
+++ b/src/java.base/share/classes/sun/nio/ch/FileChannelImpl.java
@@ -1153,7 +1153,7 @@ public class FileChannelImpl
 
     // -- Memory-mapped buffers --
 
-    private sealed abstract static class Unmapper
+    private abstract static sealed class Unmapper
         implements Runnable, UnmapperProxy
     {
         private final long address;
diff --git a/src/java.base/share/classes/sun/util/calendar/AbstractCalendar.java b/src/java.base/share/classes/sun/util/calendar/AbstractCalendar.java
index f2582b80e47..ffffd106813 100644
--- a/src/java.base/share/classes/sun/util/calendar/AbstractCalendar.java
+++ b/src/java.base/share/classes/sun/util/calendar/AbstractCalendar.java
@@ -44,7 +44,7 @@ import java.util.TimeZone;
  * @since 1.5
  */
 
-public sealed abstract class AbstractCalendar extends CalendarSystem
+public abstract sealed class AbstractCalendar extends CalendarSystem
         permits BaseCalendar {
 
     // The constants assume no leap seconds support.
diff --git a/src/java.base/share/classes/sun/util/calendar/BaseCalendar.java b/src/java.base/share/classes/sun/util/calendar/BaseCalendar.java
index 9749ab31afd..f47cde8c98a 100644
--- a/src/java.base/share/classes/sun/util/calendar/BaseCalendar.java
+++ b/src/java.base/share/classes/sun/util/calendar/BaseCalendar.java
@@ -36,7 +36,7 @@ import java.util.TimeZone;
  * @since 1.5
  */
 
-public sealed abstract class BaseCalendar extends AbstractCalendar
+public abstract sealed class BaseCalendar extends AbstractCalendar
         permits Gregorian, JulianCalendar, LocalGregorianCalendar {
 
     public static final int JANUARY = 1;
@@ -141,7 +141,7 @@ public sealed abstract class BaseCalendar extends AbstractCalendar
         744365, // 2039
     };
 
-    public sealed abstract static class Date extends CalendarDate
+    public abstract static sealed class Date extends CalendarDate
             permits Gregorian.Date, ImmutableGregorianDate, JulianCalendar.Date, LocalGregorianCalendar.Date {
         protected Date() {
             super();
diff --git a/src/java.base/share/classes/sun/util/calendar/CalendarDate.java b/src/java.base/share/classes/sun/util/calendar/CalendarDate.java
index 7485a9fb37a..aa5653e4f3a 100644
--- a/src/java.base/share/classes/sun/util/calendar/CalendarDate.java
+++ b/src/java.base/share/classes/sun/util/calendar/CalendarDate.java
@@ -59,7 +59,7 @@ import java.util.TimeZone;
  * @author Masayoshi Okutsu
  * @since 1.5
  */
-public sealed abstract class CalendarDate implements Cloneable
+public abstract sealed class CalendarDate implements Cloneable
         permits BaseCalendar.Date {
     public static final int FIELD_UNDEFINED = Integer.MIN_VALUE;
     public static final long TIME_UNDEFINED = Long.MIN_VALUE;
diff --git a/src/java.base/share/classes/sun/util/calendar/CalendarSystem.java b/src/java.base/share/classes/sun/util/calendar/CalendarSystem.java
index ea4f76c5bf0..963cefee873 100644
--- a/src/java.base/share/classes/sun/util/calendar/CalendarSystem.java
+++ b/src/java.base/share/classes/sun/util/calendar/CalendarSystem.java
@@ -65,7 +65,7 @@ import java.util.concurrent.ConcurrentMap;
  * @since 1.5
  */
 
-public sealed abstract class CalendarSystem permits AbstractCalendar {
+public abstract sealed class CalendarSystem permits AbstractCalendar {
 
     /////////////////////// Calendar Factory Methods /////////////////////////