test fixes

core-java/src/main/java/com/baeldung/hexToAscii/HexToAscii.java

@@ -1,10 +1,13 @@
 package com.baeldung.hexToAscii;
 
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
 public class HexToAscii {
 
     @Test
     public static void whenHexToAscii() {
-
         String asciiString = "http://www.baeldung.com/jackson-serialize-dates";
         String hexEquivalent = "687474703a2f2f7777772e6261656c64756e672e636f6d2f6a61636b736f6e2d73657269616c697a652d6461746573";
 
@@ -13,15 +16,15 @@ public class HexToAscii {
 
     @Test
     public static void whenAsciiToHex() {
-
         String asciiString = "http://www.baeldung.com/jackson-serialize-dates";
         String hexEquivalent = "687474703a2f2f7777772e6261656c64756e672e636f6d2f6a61636b736f6e2d73657269616c697a652d6461746573";
 
         assertEquals(hexEquivalent, asciiToHex(asciiString));
     }
 
-    private static String asciiToHex(String asciiStr) {
+    //
 
+    private static String asciiToHex(String asciiStr) {
         char[] chars = asciiStr.toCharArray();
         StringBuilder hex = new StringBuilder();
         for (char ch : chars) {
@@ -31,8 +34,7 @@ public class HexToAscii {
         return hex.toString();
     }
 
-    private static String hexToASCII(String hexStr) {
-
+    private static String hexToAscii(String hexStr) {
         StringBuilder output = new StringBuilder("");
         for (int i = 0; i < hexStr.length(); i += 2) {
             String str = hexStr.substring(i, i + 2);
@@ -40,4 +42,5 @@ public class HexToAscii {
         }
         return output.toString();
     }
+
 }