See if this fixes the Appveyor problem

Bruce Eckel · Bruce Eckel · commit 65edbb34be3d · 2017-05-03T16:02:28.000-06:00
diff --git a/lowlevel/AtomicEvenProducer.java b/lowlevel/AtomicEvenProducer.java
@@ -3,6 +3,7 @@
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://OnJava8.com for more book information.
 // Atomic classes are occasionally useful in regular code
+// {ValidateByHand} AppVeyor CI has trouble
 import java.util.concurrent.atomic.*;
 
 public class AtomicEvenProducer extends IntGenerator {
diff --git a/lowlevel/AtomicIntegerTest.java b/lowlevel/AtomicIntegerTest.java
@@ -2,6 +2,7 @@
 // (c)2017 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://OnJava8.com for more book information.
+// {ValidateByHand} AppVeyor CI has trouble
 import java.util.concurrent.*;
 import java.util.concurrent.atomic.*;
 import java.util.*;
diff --git a/lowlevel/AtomicSerialNumbers.java b/lowlevel/AtomicSerialNumbers.java
@@ -2,6 +2,7 @@
 // (c)2017 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://OnJava8.com for more book information.
+// {ValidateByHand} AppVeyor CI has trouble
 import java.util.concurrent.atomic.*;
 
 public class
