minor formatting work

core-java/src/main/java/com/baeldung/hashing/SHA256Hashing.java

@@ -1,6 +1,5 @@
 package com.baeldung.hashing;
 
-
 import com.google.common.hash.Hashing;
 import org.apache.commons.codec.digest.DigestUtils;
 import org.bouncycastle.util.encoders.Hex;
@@ -11,17 +10,14 @@ import java.security.NoSuchAlgorithmException;
 
 public class SHA256Hashing {
 
-    public static String HashWithJavaMessageDigest(final String originalString)
+    public static String HashWithJavaMessageDigest(final String originalString) throws NoSuchAlgorithmException {
-            throws NoSuchAlgorithmException {
         final MessageDigest digest = MessageDigest.getInstance("SHA-256");
-        final byte[] encodedhash = digest.digest(
+        final byte[] encodedhash = digest.digest(originalString.getBytes(StandardCharsets.UTF_8));
-                originalString.getBytes(StandardCharsets.UTF_8));
         return bytesToHex(encodedhash);
     }
 
     public static String HashWithGuava(final String originalString) {
-        final String sha256hex = Hashing.sha256().hashString(
+        final String sha256hex = Hashing.sha256().hashString(originalString, StandardCharsets.UTF_8).toString();
-                originalString, StandardCharsets.UTF_8).toString();
         return sha256hex;
     }
 
@@ -30,11 +26,9 @@ public class SHA256Hashing {
         return sha256hex;
     }
 
-    public static String HashWithBouncyCastle(final String originalString)
+    public static String HashWithBouncyCastle(final String originalString) throws NoSuchAlgorithmException {
-            throws NoSuchAlgorithmException {
         final MessageDigest digest = MessageDigest.getInstance("SHA-256");
-        final byte[] hash = digest.digest(
+        final byte[] hash = digest.digest(originalString.getBytes(StandardCharsets.UTF_8));
-                originalString.getBytes(StandardCharsets.UTF_8));
         final String sha256hex = new String(Hex.encode(hash));
         return sha256hex;
     }
@@ -43,7 +37,8 @@ public class SHA256Hashing {
         StringBuffer hexString = new StringBuffer();
         for (int i = 0; i < hash.length; i++) {
             String hex = Integer.toHexString(0xff & hash[i]);
-            if(hex.length() == 1) hexString.append('0');
+            if (hex.length() == 1)
+                hexString.append('0');
             hexString.append(hex);
         }
         return hexString.toString();

core-java/src/main/java/com/baeldung/java/nio2/visitor/FileVisitorImpl.java

@@ -19,12 +19,12 @@ public class FileVisitorImpl implements FileVisitor<Path> {
     }
 
     @Override
-    public FileVisitResult visitFileFailed(Path file, IOException exc) {       
+    public FileVisitResult visitFileFailed(Path file, IOException exc) {
         return null;
     }
 
     @Override
-    public FileVisitResult postVisitDirectory(Path dir, IOException exc) {    
+    public FileVisitResult postVisitDirectory(Path dir, IOException exc) {
         return null;
     }
 }

core-java/src/test/java/com/baeldung/generics/GenericsTest.java

@@ -12,7 +12,7 @@ public class GenericsTest {
     // testing the generic method with Integer
     @Test
     public void givenArrayOfIntegers_thanListOfIntegersReturnedOK() {
-        Integer[] intArray = {1, 2, 3, 4, 5};
+        Integer[] intArray = { 1, 2, 3, 4, 5 };
         List<Integer> list = Generics.fromArrayToList(intArray);
 
         assertThat(list, hasItems(intArray));
@@ -21,7 +21,7 @@ public class GenericsTest {
     // testing the generic method with String
     @Test
     public void givenArrayOfStrings_thanListOfStringsReturnedOK() {
-        String[] stringArray = {"hello1", "hello2", "hello3", "hello4", "hello5"};
+        String[] stringArray = { "hello1", "hello2", "hello3", "hello4", "hello5" };
         List<String> list = Generics.fromArrayToList(stringArray);
 
         assertThat(list, hasItems(stringArray));
@@ -32,7 +32,7 @@ public class GenericsTest {
     // extend Number it will fail to compile
     @Test
     public void givenArrayOfIntegersAndNumberUpperBound_thanListOfIntegersReturnedOK() {
-        Integer[] intArray = {1, 2, 3, 4, 5};
+        Integer[] intArray = { 1, 2, 3, 4, 5 };
         List<Integer> list = Generics.fromArrayToListWithUpperBound(intArray);
 
         assertThat(list, hasItems(intArray));

core-java/src/test/java/com/baeldung/hashing/SHA256HashingTest.java

@@ -4,12 +4,10 @@ import org.junit.Test;
 
 import static org.junit.Assert.*;
 
-
 public class SHA256HashingTest {
 
     private static String originalValue = "abc123";
-    private static String hashedValue =
+    private static String hashedValue = "6ca13d52ca70c883e0f0bb101e425a89e8624de51db2d2392593af6a84118090";
-            "6ca13d52ca70c883e0f0bb101e425a89e8624de51db2d2392593af6a84118090";
 
     @Test
     public void testHashWithJavaMessageDigest() throws Exception {

core-java/src/test/java/com/baeldung/java/conversion/StringConversionTest.java

@@ -119,8 +119,7 @@ public class StringConversionTest {
         int afterConvCalendarDay = 03;
         Month afterConvCalendarMonth = Month.DECEMBER;
         int afterConvCalendarYear = 2007;
-        LocalDateTime afterConvDate 
+        LocalDateTime afterConvDate = new UseLocalDateTime().getLocalDateTimeUsingParseMethod(str);
-          = new UseLocalDateTime().getLocalDateTimeUsingParseMethod(str);
 
         assertEquals(afterConvDate.getDayOfMonth(), afterConvCalendarDay);
         assertEquals(afterConvDate.getMonth(), afterConvCalendarMonth);

core-java/src/test/java/com/baeldung/java/nio2/async/AsyncEchoServer.java

@@ -66,6 +66,7 @@ public class AsyncEchoServer {
         AsyncEchoServer server = new AsyncEchoServer();
         server.runServer();
     }
+
     public static Process start() throws IOException, InterruptedException {
         String javaHome = System.getProperty("java.home");
         String javaBin = javaHome + File.separator + "bin" + File.separator + "java";

core-java/src/test/java/com/baeldung/java/nio2/async/AsyncEchoServer2.java

@@ -81,7 +81,6 @@ public class AsyncEchoServer2 {
 
     }
 
-
     public static void main(String[] args) {
         new AsyncEchoServer2();
     }

core-java/src/test/java/com/baeldung/java/nio2/async/AsyncFileTest.java

@@ -82,8 +82,7 @@ public class AsyncFileTest {
     public void givenPathAndContent_whenWritesToFileWithHandler_thenCorrect() throws IOException {
         String fileName = UUID.randomUUID().toString();
         Path path = Paths.get(fileName);
-        AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.WRITE, StandardOpenOption.CREATE,StandardOpenOption.DELETE_ON_CLOSE);
+        AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.WRITE, StandardOpenOption.CREATE, StandardOpenOption.DELETE_ON_CLOSE);
-
 
         ByteBuffer buffer = ByteBuffer.allocate(1024);
         buffer.put("hello world".getBytes());

core-java/src/test/java/org/baeldung/java/io/JavaFileUnitTest.java

@@ -20,7 +20,6 @@ public class JavaFileUnitTest {
 
     private static final String TEMP_DIR = "src/test/resources/temp" + UUID.randomUUID().toString();
 
-
     @BeforeClass
     public static void setup() throws IOException {
         Files.createDirectory(Paths.get(TEMP_DIR));

core-java/src/test/java/org/baeldung/java/sorting/Employee.java

@@ -1,14 +1,14 @@
 package org.baeldung.java.sorting;
 
 public class Employee implements Comparable {
-    
+
     private String name;
     private int age;
     private double salary;
 
     public Employee(String name, int age, double salary) {
-        this.name = name; 
+        this.name = name;
-        this.age = age; 
+        this.age = age;
         this.salary = salary;
     }
 
@@ -35,7 +35,7 @@ public class Employee implements Comparable {
     public void setSalary(double salary) {
         this.salary = salary;
     }
-    
+
     @Override
     public boolean equals(Object obj) {
         return ((Employee) obj).getName().equals(getName());
@@ -46,13 +46,10 @@ public class Employee implements Comparable {
         Employee e = (Employee) o;
         return getName().compareTo(e.getName());
     }
-    
+
     @Override
     public String toString() {
-        return new StringBuffer()
+        return new StringBuffer().append("(").append(getName()).append(getAge()).append(",").append(getSalary()).append(")").toString();
-            .append("(").append(getName())
-            .append(getAge()).append(",")
-            .append(getSalary()).append(")").toString();
     }
 
 }