Post review edited chapter 4

fpinjava-parent/fpinjava-common/src/main/java/com/fpinjava/common/TailCall.java

@@ -11,7 +11,7 @@ public abstract class TailCall<T> {
   private TailCall() {
   }
 
-  public static class Return<T> extends TailCall<T> {
+  private static class Return<T> extends TailCall<T> {
 
     private final T t;
 
@@ -35,7 +35,7 @@ public abstract class TailCall<T> {
     }
   }
 
-  public static class Suspend<T> extends TailCall<T> {
+  private static class Suspend<T> extends TailCall<T> {
 
     private final Supplier<TailCall<T>> resume;
 

fpinjava-parent/fpinjava-recursion-exercises/src/main/java/com/fpinjava/recursion/listing04_03/TailCall.java

@@ -10,7 +10,7 @@ public abstract class TailCall<T> {
 
   public abstract boolean isSuspend();
 
-  public static class Return<T> extends TailCall<T> {
+  private static class Return<T> extends TailCall<T> {
 
     private final T t;
 
@@ -34,7 +34,7 @@ public abstract class TailCall<T> {
     }
   }
 
-  public static class Suspend<T> extends TailCall<T> {
+  private static class Suspend<T> extends TailCall<T> {
 
     private final Supplier<TailCall<T>> resume;
 
@@ -69,4 +69,4 @@ public abstract class TailCall<T> {
   public static <T> Suspend<T> sus(Supplier<TailCall<T>> s) {
     return new Suspend<>(s);
   }
-}
\ No newline at end of file
+}

fpinjava-parent/fpinjava-recursion-solutions/src/main/java/com/fpinjava/recursion/listing04_03/TailCall.java

@@ -9,11 +9,11 @@ public abstract class TailCall<T> {
   public abstract T eval();
 
   public abstract boolean isSuspend();
-  
+
   private TailCall() {
   }
 
-  public static class Return<T> extends TailCall<T> {
+  private static class Return<T> extends TailCall<T> {
 
     private final T t;
 
@@ -37,7 +37,7 @@ public abstract class TailCall<T> {
     }
   }
 
-  public static class Suspend<T> extends TailCall<T> {
+  private static class Suspend<T> extends TailCall<T> {
 
     private final Supplier<TailCall<T>> resume;
 
@@ -72,4 +72,4 @@ public abstract class TailCall<T> {
   public static <T> Suspend<T> sus(Supplier<TailCall<T>> s) {
     return new Suspend<>(s);
   }
-}
\ No newline at end of file
+}

fpinjava-parent/fpinjava-recursion-solutions/src/test/java/com/fpinjava/recursion/listing04_02/AddTest.java

@@ -11,7 +11,7 @@ public class AddTest {
   @Test
   public void test() {
     TailCall<Integer> tailCall = Add.add(3, 100000000);
-    while(tailCall .isSuspend()) {
+    while(tailCall.isSuspend()) {
       tailCall = tailCall.resume();
     }
     assertEquals(Integer.valueOf(100000003), tailCall.eval());