diff --git a/core-java-modules/core-java-uuid/src/test/java/com/baeldung/uuid/UUIDPositiveLongGeneratorUnitTest.java b/core-java-modules/core-java-uuid/src/test/java/com/baeldung/uuid/UUIDPositiveLongGeneratorUnitTest.java
index 48bf72b417..4399c27c6b 100644
--- a/core-java-modules/core-java-uuid/src/test/java/com/baeldung/uuid/UUIDPositiveLongGeneratorUnitTest.java
+++ b/core-java-modules/core-java-uuid/src/test/java/com/baeldung/uuid/UUIDPositiveLongGeneratorUnitTest.java
@@ -1,12 +1,9 @@
 package com.baeldung.uuid;
 
-import com.fasterxml.uuid.impl.UUIDUtil;
 import org.junit.jupiter.api.Test;
 
-import java.nio.ByteBuffer;
 import java.util.UUID;
 
-import static org.apache.commons.io.IOUtils.byteArray;
 import static org.assertj.core.api.Assertions.assertThat;
 
 public class UUIDPositiveLongGeneratorUnitTest {
@@ -23,80 +20,4 @@ public class UUIDPositiveLongGeneratorUnitTest {
         assertThat(randomPositiveLong).isPositive();
     }
 
-    private byte[] toByteArrayBitwise(UUID uuid) {
-        long msb = uuid.getMostSignificantBits();
-        long lsb = uuid.getLeastSignificantBits();
-        byte[] buffer = new byte[16];
-        for (int i = 0; i < 8; i++) {
-            buffer[i] = (byte) (msb >>> 8 * (7 - i));
-        }
-        for (int i = 8; i < 16; i++) {
-            buffer[i] = (byte) (lsb >>> 8 * (7 - i));
-        }
-        return buffer;
-    }
-
-//    private byte[] toByteArray(UUID uuid) {
-//        long msb = uuid.getMostSignificantBits();
-//        long lsb = uuid.getLeastSignificantBits();
-//
-//        String binaryString = Long.toBinaryString(msb) + Long.toBinaryString(lsb);
-//
-//        // Memastikan panjang string biner menggunakan StringBuilder
-//        StringBuilder sb = new StringBuilder();
-//        for (int i = 0; i < 128 - binaryString.length(); i++) {
-//            sb.append('0');
-//        }
-//        sb.append(binaryString);
-//        String paddedString = sb.toString();
-//
-//        // Mengubah string biner menjadi array byte
-//        byte[] bytes = new byte[paddedString.length() / 8];
-//        for (int i = 0; i < bytes.length; i++) {
-//            String byteString = paddedString.substring(i * 8, (i + 1) * 8);
-//            bytes[i] = (byte) Integer.parseInt(byteString, 2);
-//        }
-//
-//        return bytes;
-//    }
-
-    private byte[] toByteArray(UUID uuid) {
-        long msb = uuid.getMostSignificantBits();
-        long lsb = uuid.getLeastSignificantBits();
-
-        // Menggabungkan most significant bits dan least significant bits menjadi satu nilai long
-        byte[] uuidBytes = new byte[16];
-        ByteBuffer.wrap(uuidBytes)
-                .putLong(msb)
-                .putLong(lsb);
-
-        return uuidBytes;
-    }
-
-    @Test
-    public void whenGivenUUID_thenVerified() {
-        for (int i = 0; i < 100; i++) {
-            UUID uuid = UUID.randomUUID();
-            byte[] bytes = toByteArray(uuid);
-//            byte[] bytes = UUIDUtil.asByteArray(uuid);
-
-            // assert that byte at index 6 is 0x40 (version 4)
-            byte byte6 = bytes[6];
-            assertThat(byte6 & 0xF0).isEqualTo(0x40);
-
-            // assert that the byte at index 8 is 0x80 (IETF type variant)
-            byte byte8 = bytes[8];
-            assertThat(byte8 & 0xC0).isEqualTo(0x80);
-
-            // 1 byte = 8 bites
-            int totalBites = bytes.length * 8;
-
-            // totalBites - 6 (4 bits for version and 2 bits for variant).
-            int randomBitsCount = totalBites - 6;
-
-            // assert that number of random bits is 122
-            assertThat(randomBitsCount).isEqualTo(122);
-        }
-    }
-
 }