src/share/classes/java/util/Collections.java

rev 6858 : 8004518: Add in-place operations to Map
8010122: Add defaults for ConcurrentMap operations to Map
Reviewed-by: darcy, briangoetz, mduigou, dholmes, ulfzibis
Contributed-by: Doug Lea <dl at cs.oswego.edu>, Henry Jen <henry.jen@oracle.com>, Akhil Arora <akhil.arora@oracle.com>, Peter Levart <peter.levart@gmail.com>

@@ -26,10 +26,13 @@
 package java.util;
 import java.io.Serializable;
 import java.io.ObjectOutputStream;
 import java.io.IOException;
 import java.lang.reflect.Array;
+import java.util.function.BiConsumer;
+import java.util.function.BiFunction;
+import java.util.function.Function;
 
 /**
  * This class consists exclusively of static methods that operate on or return
  * collections.  It contains polymorphic algorithms that operate on
  * collections, "wrappers", which return a new collection backed by a

@@ -1389,10 +1392,54 @@
 
         public boolean equals(Object o) {return o == this || m.equals(o);}
         public int hashCode()           {return m.hashCode();}
         public String toString()        {return m.toString();}
 
+        // Override default methods in Map
+        @Override
+        public V putIfAbsent(K key, V value) {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public boolean remove(Object key, Object value) {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public boolean replace(K key, V oldValue, V newValue) {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public V replace(K key, V value) {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction) {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public V computeIfPresent(K key,
+                        BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public V compute(K key,
+                        BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public V merge(K key, V value,
+                        BiFunction<? super V, ? super V, ? extends V> remappingFunction) {
+            throw new UnsupportedOperationException();
+        }
+
         /**
          * We need this class in addition to UnmodifiableSet as
          * Map.Entries themselves permit modification of the backing Map
          * via their setValue operation.  This class is subtle: there are
          * many possible attacks that must be thwarted.

@@ -1588,13 +1635,13 @@
      *         foo(i.next());
      *  }
      * </pre>
      * Failure to follow this advice may result in non-deterministic behavior.
      *
-     * <p>The returned collection does <i>not</i> pass the <tt>hashCode</tt>
-     * and <tt>equals</tt> operations through to the backing collection, but
-     * relies on <tt>Object</tt>'s equals and hashCode methods.  This is
+     * <p>The returned collection does <i>not</i> pass the {@code hashCode}
+     * and {@code equals} operations through to the backing collection, but
+     * relies on {@code Object}'s equals and hashCode methods.  This is
      * necessary to preserve the contracts of these operations in the case
      * that the backing collection is a set or a list.<p>
      *
      * The returned collection will be serializable if the specified collection
      * is serializable.

@@ -2105,10 +2152,54 @@
             synchronized (mutex) {return m.hashCode();}
         }
         public String toString() {
             synchronized (mutex) {return m.toString();}
         }
+
+        // Override default methods in Map
+        @Override
+        public V getOrDefault(Object k, V defaultValue) {
+            synchronized (mutex) {return m.getOrDefault(k, defaultValue);}
+        }
+
+        @Override
+        public void forEach(BiConsumer<? super K, ? super V> action) {
+            synchronized (mutex) {m.forEach(action);}
+        }
+        @Override
+        public V putIfAbsent(K key, V value) {
+            synchronized (mutex) {return m.putIfAbsent(key, value);}
+        }
+        @Override
+        public boolean remove(Object key, Object value) {
+            synchronized (mutex) {return m.remove(key, value);}
+        }
+        @Override
+        public boolean replace(K key, V oldValue, V newValue) {
+            synchronized (mutex) {return m.replace(key, oldValue, newValue);}
+        }
+        @Override
+        public V replace(K key, V value) {
+            synchronized (mutex) {return m.replace(key, value);}
+        }
+        @Override
+        public V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction) {
+            synchronized (mutex) {return m.computeIfAbsent(key, mappingFunction);}
+        }
+        @Override
+        public V computeIfPresent(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
+            synchronized (mutex) {return m.computeIfPresent(key, remappingFunction);}
+        }
+        @Override
+        public V compute(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
+            synchronized (mutex) {return m.compute(key, remappingFunction);}
+        }
+        @Override
+        public V merge(K key, V value, BiFunction<? super V, ? super V, ? extends V> remappingFunction) {
+            synchronized (mutex) {return m.merge(key, value, remappingFunction);}
+        }
+
         private void writeObject(ObjectOutputStream s) throws IOException {
             synchronized (mutex) {s.defaultWriteObject();}
         }
     }