docs: improve execute around

execute-around/src/main/java/com/iluwatar/execute/around/App.java

@@ -30,7 +30,7 @@ import java.util.Scanner;
 import lombok.extern.slf4j.Slf4j;
 
 /**
- * The Execute Around idiom specifies executable code before and after a method. Typically
+ * The Execute Around idiom specifies executable code before and after a method. Typically,
  * the idiom is used when the API has methods to be executed in pairs, such as resource
  * allocation/deallocation or lock acquisition/release.
  *
@@ -47,9 +47,7 @@ public class App {
   public static void main(String[] args) throws IOException {
 
     // create the file writer and execute the custom action
-    FileWriterAction writeHello = writer -> {
-      writer.write("Gandalf was here");
-    };
+    FileWriterAction writeHello = writer -> writer.write("Gandalf was here");
     new SimpleFileWriter("testfile.txt", writeHello);
 
     // print the file contents

execute-around/src/test/java/com/iluwatar/execute/around/AppTest.java

@@ -24,14 +24,13 @@
  */
 package com.iluwatar.execute.around;
 
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+
 import java.io.File;
-import java.io.IOException;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
-
 /**
  * Tests execute-around example.
  */