update example

README.md

@@ -71,7 +71,7 @@ mvn package
 <dependency>
     <groupId>io.xdag</groupId>
     <artifactId>xdagj-native-randomx</artifactId>
-    <version>0.1.4</version>
+    <version>0.1.5</version>
 </dependency>
 ```
 
@@ -81,8 +81,8 @@ mvn package
 package io.xdag.crypto.randomx;
 
 import java.nio.charset.StandardCharsets;
-import com.google.common.collect.Lists;
-import com.google.common.io.BaseEncoding;
+import java.util.HexFormat;
+import java.util.List;
 
 public class Example {
 
@@ -92,7 +92,7 @@ public class Example {
 
         // 1. build randomx jna wrapper
         RandomXWrapper randomXWrapper = RandomXWrapper.builder()
-                .flags(Lists.newArrayList(RandomXFlag.JIT))
+                .flags(List.of(RandomXFlag.JIT))
                 .fastInit(true)
                 .build();
 
@@ -106,11 +106,13 @@ public class Example {
         byte[] hash = randomxVm.getHash(keyBytes);
 
         // 5. print result
+        HexFormat hex = HexFormat.of();
         System.out.println("message:" + key);
-        System.out.println("hash:" + BaseEncoding.base16().lowerCase().encode(hash));
+        System.out.println("hash:" + hex.formatHex(hash));
     }
 }
 
+
 ```
 
 ### 5. benchmark