[9] RFR (XS): 8044730: small errors in ConcurrentHashMap and LongAdder docs

[Stuart Marks]

Hi Martin,

Thanks for augmenting my patch and pushing it into the JSR166 repo. Here's the 
patch rebased against jdk9-dev. Please review.

s'marks



# HG changeset patch
# User smarks
# Date 1402960663 25200
#      Mon Jun 16 16:17:43 2014 -0700
# Node ID c8c2d902f3f1338b8074607367e7af8e294ae1c6
# Parent  ade4491b571e65f28a6295b8be9679830a5e9a85
8044730: small errors in ConcurrentHashMap and LongAdder docs
Reviewed-by: XXX

diff -r ade4491b571e -r c8c2d902f3f1 
src/share/classes/java/util/concurrent/ConcurrentHashMap.java
--- a/src/share/classes/java/util/concurrent/ConcurrentHashMap.java	Mon Jun 16 
13:48:58 2014 -0400
+++ b/src/share/classes/java/util/concurrent/ConcurrentHashMap.java	Mon Jun 16 
16:17:43 2014 -0700
@@ -133,12 +133,12 @@
   * mapped values are (perhaps transiently) not used or all take the
   * same mapping value.
   *
- * <p>A ConcurrentHashMap can be used as scalable frequency map (a
+ * <p>A ConcurrentHashMap can be used as a scalable frequency map (a
   * form of histogram or multiset) by using {@link
   * java.util.concurrent.atomic.LongAdder} values and initializing via
   * {@link #computeIfAbsent computeIfAbsent}. For example, to add a count
   * to a {@code ConcurrentHashMap<String,LongAdder> freqs}, you can use
- * {@code freqs.computeIfAbsent(k -> new LongAdder()).increment();}
+ * {@code freqs.computeIfAbsent(key, k -> new LongAdder()).increment();}
   *
   * <p>This class and its views and iterators implement all of the
   * <em>optional</em> methods of the {@link Map} and {@link Iterator}
diff -r ade4491b571e -r c8c2d902f3f1 
src/share/classes/java/util/concurrent/atomic/LongAdder.java
--- a/src/share/classes/java/util/concurrent/atomic/LongAdder.java	Mon Jun 16 
13:48:58 2014 -0400
+++ b/src/share/classes/java/util/concurrent/atomic/LongAdder.java	Mon Jun 16 
16:17:43 2014 -0700
@@ -57,7 +57,7 @@
   * frequency map (a form of histogram or multiset). For example, to
   * add a count to a {@code ConcurrentHashMap<String,LongAdder> freqs},
   * initializing if not already present, you can use {@code
- * freqs.computeIfAbsent(k -> new LongAdder()).increment();}
+ * freqs.computeIfAbsent(key, k -> new LongAdder()).increment();}
   *
   * <p>This class extends {@link Number}, but does <em>not</em> define
   * methods such as {@code equals}, {@code hashCode} and {@code