jdk/src/java.base/share/classes/java/util/OptionalInt.java
changeset 28963 8498cdb7c54b
parent 28754 8fe59917548d
child 29599 e2c48b046f91
--- a/jdk/src/java.base/share/classes/java/util/OptionalInt.java	Fri Feb 13 11:03:57 2015 +0800
+++ b/jdk/src/java.base/share/classes/java/util/OptionalInt.java	Fri Feb 13 11:13:27 2015 +0100
@@ -37,8 +37,8 @@
  * <p>Additional methods that depend on the presence or absence of a contained
  * value are provided, such as {@link #orElse(int) orElse()}
  * (return a default value if value not present) and
- * {@link #ifPresent(java.util.function.IntConsumer) ifPresent()} (execute a block
- * of code if the value is present).
+ * {@link #ifPresent(java.util.function.IntConsumer) ifPresent()} (perform an
+ * action if the value is present).
  *
  * <p>This is a <a href="../lang/doc-files/ValueBased.html">value-based</a>
  * class; use of identity-sensitive operations (including reference equality
@@ -131,16 +131,35 @@
     }
 
     /**
-     * Have the specified consumer accept the value if a value is present,
+     * If a value is present, perform the given action with the value,
      * otherwise do nothing.
      *
-     * @param consumer block to be executed if a value is present
-     * @throws NullPointerException if value is present and {@code consumer} is
+     * @param action the action to be performed if a value is present
+     * @throws NullPointerException if value is present and {@code action} is
      * null
      */
-    public void ifPresent(IntConsumer consumer) {
+    public void ifPresent(IntConsumer action) {
         if (isPresent) {
-            consumer.accept(value);
+            action.accept(value);
+        }
+    }
+
+    /**
+     * If a value is present, perform the given action with the value,
+     * otherwise perform the given empty-based action.
+     *
+     * @param action the action to be performed if a value is present
+     * @param emptyAction the empty-based action to be performed if a value is
+     * not present
+     * @throws NullPointerException if a value is present and {@code action} is
+     * null, or a value is not present and {@code emptyAction} is null.
+     * @since 1.9
+     */
+    public void ifPresentOrElse(IntConsumer action, Runnable emptyAction) {
+        if (isPresent) {
+            action.accept(value);
+        } else {
+            emptyAction.run();
         }
     }