diff --git a/10-java-functional-stream/task01/src/com/example/task01/Task01Main.java b/10-java-functional-stream/task01/src/com/example/task01/Task01Main.java
index fa5f9a2fa..93e56ac51 100644
--- a/10-java-functional-stream/task01/src/com/example/task01/Task01Main.java
+++ b/10-java-functional-stream/task01/src/com/example/task01/Task01Main.java
@@ -1,29 +1,28 @@
 package com.example.task01;
 
 import java.io.IOException;
+import java.util.Objects;
 import java.util.function.Function;
 import java.util.function.Predicate;
 
-public class Task01Main {
-    public static void main(String[] args) throws IOException {
-
-        // TODO С корректно реализованным методом ternaryOperator должен компилироваться и успешно работать следующий код:
-
-        /*
+public class Task01Main
+{
+    public static void main(String[] args) throws IOException
+    {
         Predicate<Object> condition = Objects::isNull;
         Function<Object, Integer> ifTrue = obj -> 0;
         Function<CharSequence, Integer> ifFalse = CharSequence::length;
         Function<String, Integer> safeStringLength = ternaryOperator(condition, ifTrue, ifFalse);
-        */
-
     }
 
     public static <T, U> Function<T, U> ternaryOperator(
             Predicate<? super T> condition,
             Function<? super T, ? extends U> ifTrue,
-            Function<? super T, ? extends U> ifFalse) {
-
-        return null; // your implementation here
-
+            Function<? super T, ? extends U> ifFalse)
+    {
+        Objects.requireNonNull(condition);
+        Objects.requireNonNull(ifTrue);
+        Objects.requireNonNull(ifFalse);
+        return ter -> condition.test(ter) ? ifTrue.apply(ter) : ifFalse.apply(ter);
     }
 }