diff --git a/api/current.txt b/api/current.txt
index bfb5800206fdc..aede9a0ab058a 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -59498,34 +59498,31 @@ package java.util.concurrent {
     ctor public CopyOnWriteArrayList();
     ctor public CopyOnWriteArrayList(java.util.Collection<? extends E>);
     ctor public CopyOnWriteArrayList(E[]);
-    method public boolean add(E);
-    method public void add(int, E);
-    method public boolean addAll(java.util.Collection<? extends E>);
-    method public boolean addAll(int, java.util.Collection<? extends E>);
-    method public int addAllAbsent(java.util.Collection<? extends E>);
-    method public boolean addIfAbsent(E);
-    method public void clear();
+    method public synchronized boolean add(E);
+    method public synchronized void add(int, E);
+    method public synchronized boolean addAll(java.util.Collection<? extends E>);
+    method public synchronized boolean addAll(int, java.util.Collection<? extends E>);
+    method public synchronized int addAllAbsent(java.util.Collection<? extends E>);
+    method public synchronized boolean addIfAbsent(E);
+    method public synchronized void clear();
     method public java.lang.Object clone();
     method public boolean contains(java.lang.Object);
     method public boolean containsAll(java.util.Collection<?>);
-    method public void forEach(java.util.function.Consumer<? super E>);
     method public E get(int);
-    method public int indexOf(java.lang.Object);
     method public int indexOf(E, int);
+    method public int indexOf(java.lang.Object);
     method public boolean isEmpty();
     method public java.util.Iterator<E> iterator();
-    method public int lastIndexOf(java.lang.Object);
     method public int lastIndexOf(E, int);
-    method public java.util.ListIterator<E> listIterator();
+    method public int lastIndexOf(java.lang.Object);
     method public java.util.ListIterator<E> listIterator(int);
-    method public E remove(int);
-    method public boolean remove(java.lang.Object);
-    method public boolean removeAll(java.util.Collection<?>);
-    method public void replaceAll(java.util.function.UnaryOperator<E>);
-    method public boolean retainAll(java.util.Collection<?>);
-    method public E set(int, E);
+    method public java.util.ListIterator<E> listIterator();
+    method public synchronized E remove(int);
+    method public synchronized boolean remove(java.lang.Object);
+    method public synchronized boolean removeAll(java.util.Collection<?>);
+    method public synchronized boolean retainAll(java.util.Collection<?>);
+    method public synchronized E set(int, E);
     method public int size();
-    method public void sort(java.util.Comparator<? super E>);
     method public java.util.List<E> subList(int, int);
     method public java.lang.Object[] toArray();
     method public T[] toArray(T[]);
diff --git a/api/system-current.txt b/api/system-current.txt
index d355e4f9a0053..4e8ae82d24c09 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -62598,34 +62598,31 @@ package java.util.concurrent {
     ctor public CopyOnWriteArrayList();
     ctor public CopyOnWriteArrayList(java.util.Collection<? extends E>);
     ctor public CopyOnWriteArrayList(E[]);
-    method public boolean add(E);
-    method public void add(int, E);
-    method public boolean addAll(java.util.Collection<? extends E>);
-    method public boolean addAll(int, java.util.Collection<? extends E>);
-    method public int addAllAbsent(java.util.Collection<? extends E>);
-    method public boolean addIfAbsent(E);
-    method public void clear();
+    method public synchronized boolean add(E);
+    method public synchronized void add(int, E);
+    method public synchronized boolean addAll(java.util.Collection<? extends E>);
+    method public synchronized boolean addAll(int, java.util.Collection<? extends E>);
+    method public synchronized int addAllAbsent(java.util.Collection<? extends E>);
+    method public synchronized boolean addIfAbsent(E);
+    method public synchronized void clear();
     method public java.lang.Object clone();
     method public boolean contains(java.lang.Object);
     method public boolean containsAll(java.util.Collection<?>);
-    method public void forEach(java.util.function.Consumer<? super E>);
     method public E get(int);
-    method public int indexOf(java.lang.Object);
     method public int indexOf(E, int);
+    method public int indexOf(java.lang.Object);
     method public boolean isEmpty();
     method public java.util.Iterator<E> iterator();
-    method public int lastIndexOf(java.lang.Object);
     method public int lastIndexOf(E, int);
-    method public java.util.ListIterator<E> listIterator();
+    method public int lastIndexOf(java.lang.Object);
     method public java.util.ListIterator<E> listIterator(int);
-    method public E remove(int);
-    method public boolean remove(java.lang.Object);
-    method public boolean removeAll(java.util.Collection<?>);
-    method public void replaceAll(java.util.function.UnaryOperator<E>);
-    method public boolean retainAll(java.util.Collection<?>);
-    method public E set(int, E);
+    method public java.util.ListIterator<E> listIterator();
+    method public synchronized E remove(int);
+    method public synchronized boolean remove(java.lang.Object);
+    method public synchronized boolean removeAll(java.util.Collection<?>);
+    method public synchronized boolean retainAll(java.util.Collection<?>);
+    method public synchronized E set(int, E);
     method public int size();
-    method public void sort(java.util.Comparator<? super E>);
     method public java.util.List<E> subList(int, int);
     method public java.lang.Object[] toArray();
     method public T[] toArray(T[]);
diff --git a/api/test-current.txt b/api/test-current.txt
index 6f95f7b68b94a..cfad840ab4b78 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -59572,34 +59572,31 @@ package java.util.concurrent {
     ctor public CopyOnWriteArrayList();
     ctor public CopyOnWriteArrayList(java.util.Collection<? extends E>);
     ctor public CopyOnWriteArrayList(E[]);
-    method public boolean add(E);
-    method public void add(int, E);
-    method public boolean addAll(java.util.Collection<? extends E>);
-    method public boolean addAll(int, java.util.Collection<? extends E>);
-    method public int addAllAbsent(java.util.Collection<? extends E>);
-    method public boolean addIfAbsent(E);
-    method public void clear();
+    method public synchronized boolean add(E);
+    method public synchronized void add(int, E);
+    method public synchronized boolean addAll(java.util.Collection<? extends E>);
+    method public synchronized boolean addAll(int, java.util.Collection<? extends E>);
+    method public synchronized int addAllAbsent(java.util.Collection<? extends E>);
+    method public synchronized boolean addIfAbsent(E);
+    method public synchronized void clear();
     method public java.lang.Object clone();
     method public boolean contains(java.lang.Object);
     method public boolean containsAll(java.util.Collection<?>);
-    method public void forEach(java.util.function.Consumer<? super E>);
     method public E get(int);
-    method public int indexOf(java.lang.Object);
     method public int indexOf(E, int);
+    method public int indexOf(java.lang.Object);
     method public boolean isEmpty();
     method public java.util.Iterator<E> iterator();
-    method public int lastIndexOf(java.lang.Object);
     method public int lastIndexOf(E, int);
-    method public java.util.ListIterator<E> listIterator();
+    method public int lastIndexOf(java.lang.Object);
     method public java.util.ListIterator<E> listIterator(int);
-    method public E remove(int);
-    method public boolean remove(java.lang.Object);
-    method public boolean removeAll(java.util.Collection<?>);
-    method public void replaceAll(java.util.function.UnaryOperator<E>);
-    method public boolean retainAll(java.util.Collection<?>);
-    method public E set(int, E);
+    method public java.util.ListIterator<E> listIterator();
+    method public synchronized E remove(int);
+    method public synchronized boolean remove(java.lang.Object);
+    method public synchronized boolean removeAll(java.util.Collection<?>);
+    method public synchronized boolean retainAll(java.util.Collection<?>);
+    method public synchronized E set(int, E);
     method public int size();
-    method public void sort(java.util.Comparator<? super E>);
     method public java.util.List<E> subList(int, int);
     method public java.lang.Object[] toArray();
     method public T[] toArray(T[]);