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 322d93444d..37f9ab1446 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
@@ -1,6 +1,5 @@
 package com.baeldung.uuid;
 
-import com.fasterxml.uuid.impl.UUIDUtil;
 import org.junit.jupiter.api.Test;
 
 import java.util.UUID;
@@ -9,27 +8,16 @@ import static org.assertj.core.api.Assertions.assertThat;
 
 public class UUIDPositiveLongGeneratorUnitTest {
 
-    private void verifyUUID(UUID uuid) {
-        byte[] bytes = toByteArray(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);
+    @Test
+    public void whengetMostSignificantBits_thenAssertPositive() {
+        long randomPositiveLong = Math.abs(UUID.randomUUID().getMostSignificantBits());
+        assertThat(randomPositiveLong).isPositive();
     }
 
-    private boolean[] getFirst122Bits(UUID uuid) {
-        long msb = uuid.getMostSignificantBits();
-        boolean[] bits = new boolean[122]; // Untuk menyimpan 122 bit pertama dari UUID
-
-        // Konversi 64 bit pertama (Most Significant Bits) menjadi bit
-        for (int i = 0; i < 64; i++) {
-            bits[i] = ((msb >> (63 - i)) & 1) == 1; // Mendapatkan nilai bit ke-i
-        }
-        return bits;
+    @Test
+    public void whengetLeastSignificantBits_thenAssertPositive() {
+        long randomPositiveLong = Math.abs(UUID.randomUUID().getLeastSignificantBits());
+        assertThat(randomPositiveLong).isPositive();
     }
 
     private byte[] toByteArray(UUID uuid) {
@@ -49,10 +37,24 @@ public class UUIDPositiveLongGeneratorUnitTest {
     public void whenGivenUUID_thenVerified() {
         for (int i = 0; i < 100; i++) {
             UUID uuid = UUID.randomUUID();
-            verifyUUID(uuid);
+            byte[] bytes = toByteArray(uuid);
 
-            long msbfirst = uuid.getMostSignificantBits() >>> 6;
-            System.out.println(msbfirst);
+            // 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);
         }
     }