Implemented logic to check if BC is available

examples/provider/CryptoBenchmark.java

@@ -151,14 +151,35 @@ private static void runBenchmark(String algorithm, String mode, String providerN
 
     public static void main(String[] args) {
         try {
-            /* Array of providers to test */
-            Provider[] providers = {
-                new WolfCryptProvider(),
-                new com.sun.crypto.provider.SunJCE(),
-                new BouncyCastleProvider()
-            };
+            /* Check if Bouncy Castle is available */
+            boolean hasBouncyCastle = false;
+            try {
+                Class.forName("org.bouncycastle.jce.provider.BouncyCastleProvider");
+                hasBouncyCastle = true;
+            } catch (ClassNotFoundException e) {
+                // Bouncy Castle not available
+            }
+
+            /* Create provider list based on availability */
+            java.util.List<Provider> providerList = new java.util.ArrayList<>();
+            java.util.List<String> providerNameList = new java.util.ArrayList<>();
+
+            /* Always add wolfJCE first */
+            providerList.add(new WolfCryptProvider());
+            providerNameList.add("wolfJCE");
+
+            /* Always add SunJCE second */
+            providerList.add(new com.sun.crypto.provider.SunJCE());
+            providerNameList.add("SunJCE");
+
+            /* Add Bouncy Castle if available */
+            if (hasBouncyCastle) {
+                providerList.add(new BouncyCastleProvider());
+                providerNameList.add("BC");
+            }
 
-            String[] providerNames = {"wolfJCE", "SunJCE", "BC"};
+            Provider[] providers = providerList.toArray(new Provider[0]);
+            String[] providerNames = providerNameList.toArray(new String[0]);
 
             System.out.println("------------------------------------------------------------------------------");
             System.out.println(" JCE Crypto Provider Benchmark");