diff --git a/org.eclipse.jdt.ui/preview/formatter.java b/org.eclipse.jdt.ui/preview/formatter.java
index 01705d1..d8df231 100644
--- a/org.eclipse.jdt.ui/preview/formatter.java
+++ b/org.eclipse.jdt.ui/preview/formatter.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2018, 2019 Mateusz Matela and others.
+ * Copyright (c) 2018, 2021 Mateusz Matela and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -376,6 +376,8 @@
 //--PREVIEW--START--section-whitespace-declarations-classes
 class MyClass implements I0, I1, I2 {}
 
+public sealed class W permits X, Y, Z {}
+
 AnonClass object= new AnonClass() {void foo(Some s) { }};
 //--PREVIEW--END--section-whitespace-declarations-classes
 
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.java
index e48d44a..fc145b0 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2019 IBM Corporation and others.
+ * Copyright (c) 2000, 2021 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -319,6 +319,7 @@
 	public static String FormatterModifyDialog_whiteSpace_pref_after_comma_in_case_expressions;
 	public static String FormatterModifyDialog_whiteSpace_pref_after_comma_in_method_args;
 	public static String FormatterModifyDialog_whiteSpace_pref_after_comma_in_params;
+	public static String FormatterModifyDialog_whiteSpace_pref_after_comma_in_permits;
 	public static String FormatterModifyDialog_whiteSpace_pref_after_comma_in_qalloc;
 	public static String FormatterModifyDialog_whiteSpace_pref_after_comma_in_record_components;
 	public static String FormatterModifyDialog_whiteSpace_pref_after_comma_in_throws;
@@ -367,6 +368,7 @@
 	public static String FormatterModifyDialog_whiteSpace_pref_before_comma_in_case_expressions;
 	public static String FormatterModifyDialog_whiteSpace_pref_before_comma_in_method_args;
 	public static String FormatterModifyDialog_whiteSpace_pref_before_comma_in_params;
+	public static String FormatterModifyDialog_whiteSpace_pref_before_comma_in_permits;
 	public static String FormatterModifyDialog_whiteSpace_pref_before_comma_in_qalloc;
 	public static String FormatterModifyDialog_whiteSpace_pref_before_comma_in_record_components;
 	public static String FormatterModifyDialog_whiteSpace_pref_before_comma_in_throws;
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.properties b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.properties
index be70a5f..3acb951 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.properties
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterMessages.properties
@@ -1,5 +1,5 @@
 ###############################################################################
-# Copyright (c) 2000, 2019 IBM Corporation and others.
+# Copyright (c) 2000, 2021 IBM Corporation and others.
 #
 # This program and the accompanying materials
 # are made available under the terms of the Eclipse Public License 2.0
@@ -51,6 +51,8 @@
 FormatterModifyDialog_whiteSpace_pref_before_opening_brace_of_anon_class=Before opening brace of an anonymous class
 FormatterModifyDialog_whiteSpace_pref_before_comma_implements=Before comma in implements clause
 FormatterModifyDialog_whiteSpace_pref_after_comma_implements=After comma in implements clause
+FormatterModifyDialog_whiteSpace_pref_before_comma_in_permits=Before comma in permits clause
+FormatterModifyDialog_whiteSpace_pref_after_comma_in_permits=After comma in permits clause
 
 FormatterModifyDialog_whiteSpace_tree_methods=Methods
 FormatterModifyDialog_whiteSpace_tree_constructors=Constructors
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterModifyDialog.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterModifyDialog.java
index 8f17643..9c5ff34 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterModifyDialog.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/FormatterModifyDialog.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2019 IBM Corporation and others.
+ * Copyright (c) 2000, 2021 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -1054,7 +1054,9 @@
 								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_before_opening_brace_of_a_class, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACE_IN_TYPE_DECLARATION)
 								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_before_opening_brace_of_anon_class, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACE_IN_ANONYMOUS_TYPE_DECLARATION)
 								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_before_comma_implements, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_COMMA_IN_SUPERINTERFACES)
-								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_after_comma_implements, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_COMMA_IN_SUPERINTERFACES))
+								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_after_comma_implements, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_COMMA_IN_SUPERINTERFACES)
+								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_before_comma_in_permits, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_COMMA_IN_PERMITTED_TYPES)
+								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_after_comma_in_permits, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_COMMA_IN_PERMITTED_TYPES))
 						.node(fTree.builder(FormatterMessages.FormatterModifyDialog_whiteSpace_tree_fields, "-fields", modAll) //$NON-NLS-1$
 								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_before_comma_fields, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_COMMA_IN_MULTIPLE_FIELD_DECLARATIONS)
 								.pref(FormatterMessages.FormatterModifyDialog_whiteSpace_pref_after_comma_fields, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_COMMA_IN_MULTIPLE_FIELD_DECLARATIONS))