diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONReaderJSONB.java b/core/src/main/java/com/alibaba/fastjson2/JSONReaderJSONB.java
index 98d0fbbe5d..589fc13991 100644
--- a/core/src/main/java/com/alibaba/fastjson2/JSONReaderJSONB.java
+++ b/core/src/main/java/com/alibaba/fastjson2/JSONReaderJSONB.java
@@ -364,7 +364,7 @@ public Object readAny() {
             case BC_STR_UTF8: {
                 int strlen = readLength();
 
-                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                     if (valueBytes == null) {
                         valueBytes = CACHE_BYTES.getAndSet(cachedIndex, null);
                     }
@@ -402,7 +402,7 @@ public Object readAny() {
                 int strlen = readLength();
 
                 String str;
-                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                     byte[] chars = new byte[strlen];
                     System.arraycopy(bytes, offset, chars, 0, strlen);
                     str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -417,7 +417,7 @@ public Object readAny() {
                 int strlen = readLength();
 
                 String str;
-                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 1) {
+                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN) {
                     byte[] chars = new byte[strlen];
                     System.arraycopy(bytes, offset, chars, 0, strlen);
                     str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -1560,7 +1560,7 @@ public String readFieldName() {
             strlen = readLength();
             strBegin = offset;
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                 if (valueBytes == null) {
                     valueBytes = CACHE_BYTES.getAndSet(cachedIndex, null);
                 }
@@ -1592,7 +1592,7 @@ public String readFieldName() {
             strlen = readLength();
             strBegin = offset;
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                 byte[] chars = new byte[strlen];
                 System.arraycopy(bytes, offset, chars, 0, strlen);
                 str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -1604,7 +1604,7 @@ public String readFieldName() {
             strlen = readLength();
             strBegin = offset;
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 1) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN) {
                 byte[] chars = new byte[strlen];
                 System.arraycopy(bytes, offset, chars, 0, strlen);
                 str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -1720,7 +1720,7 @@ public String readString() {
             strlen = readLength();
             strBegin = offset;
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                 if (valueBytes == null) {
                     valueBytes = CACHE_BYTES.getAndSet(cachedIndex, null);
                 }
@@ -1762,7 +1762,7 @@ public String readString() {
                 return "";
             }
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                 byte[] chars = new byte[strlen];
                 System.arraycopy(bytes, offset, chars, 0, strlen);
                 str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -1779,7 +1779,7 @@ public String readString() {
             strlen = readLength();
             strBegin = offset;
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 1) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN) {
                 byte[] chars = new byte[strlen];
                 System.arraycopy(bytes, offset, chars, 0, strlen);
                 str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONWriterJSONB.java b/core/src/main/java/com/alibaba/fastjson2/JSONWriterJSONB.java
index ced268f2a2..4f63f75d47 100644
--- a/core/src/main/java/com/alibaba/fastjson2/JSONWriterJSONB.java
+++ b/core/src/main/java/com/alibaba/fastjson2/JSONWriterJSONB.java
@@ -574,9 +574,9 @@ public void writeString(String str) {
                     }
                 }
 
-                if (utf16 && (JDKUtils.BIG_ENDIAN == 1 || JDKUtils.BIG_ENDIAN == 0)) {
+                if (utf16) {
                     ensureCapacity(off + 5 + value.length);
-                    bytes[off++] = JDKUtils.BIG_ENDIAN == 1 ? BC_STR_UTF16BE : BC_STR_UTF16LE;
+                    bytes[off++] = JDKUtils.BIG_ENDIAN ? BC_STR_UTF16BE : BC_STR_UTF16LE;
                     writeInt32(value.length);
                     System.arraycopy(value, 0, bytes, off, value.length);
                     off += value.length;
diff --git a/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java b/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java
index 9ba61f4181..7fe3cfc916 100644
--- a/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java
+++ b/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java
@@ -3,6 +3,7 @@
 import java.lang.invoke.*;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
+import java.nio.ByteOrder;
 import java.util.function.*;
 
 public class JDKUtils {
@@ -12,12 +13,12 @@ public class JDKUtils {
     static final long FIELD_STRING_VALUE_OFFSET;
     static volatile boolean FIELD_STRING_ERROR;
 
-    static final Class CLASS_SQL_DATASOURCE;
-    static final Class CLASS_SQL_ROW_SET;
+    static final Class<?> CLASS_SQL_DATASOURCE;
+    static final Class<?> CLASS_SQL_ROW_SET;
     public static final boolean HAS_SQL;
 
     public static final Class CLASS_TRANSIENT;
-    public static final byte BIG_ENDIAN;
+    public static final boolean BIG_ENDIAN;
 
     public static final boolean UNSAFE_SUPPORT;
 
@@ -30,7 +31,6 @@ public class JDKUtils {
     public static final Function<byte[], String> UNSAFE_ASCII_CREATOR;
 
     static {
-        boolean android = false;
         boolean openj9 = false;
         int jvmVersion = -1;
         try {
@@ -99,28 +99,7 @@ public class JDKUtils {
         }).test(null);
         UNSAFE_SUPPORT = unsafeSupport;
 
-        Boolean bigEndian = null;
-        if (JDKUtils.JVM_VERSION > 8 && UNSAFE_SUPPORT) {
-            Class clazz;
-            try {
-                clazz = Class.forName("java.lang.StringUTF16");
-                Field field = clazz.getDeclaredField("HI_BYTE_SHIFT");
-                long fieldOffset = UnsafeUtils.UNSAFE.staticFieldOffset(field);
-                int hiByteShift = UnsafeUtils.UNSAFE.getInt(clazz, fieldOffset);
-                if (hiByteShift == 8) {
-                    bigEndian = true;
-                } else {
-                    if (hiByteShift == 0) {
-                        bigEndian = false;
-                    }
-                }
-            } catch (Exception ignored) {
-                ignored.printStackTrace();
-            }
-        }
-        BIG_ENDIAN = bigEndian == null
-                ? -1
-                : bigEndian.booleanValue() ? (byte) 1 : (byte) 0;
+        BIG_ENDIAN = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN;
 
         Function<byte[], String> utf16Creator = null, asciiCreator = null;
         if (unsafeSupport) {
@@ -136,7 +115,7 @@ public class JDKUtils {
         UNSAFE_ASCII_CREATOR = asciiCreator;
     }
 
-    public static boolean isSQLDataSourceOrRowSet(Class type) {
+    public static boolean isSQLDataSourceOrRowSet(Class<?> type) {
         return (CLASS_SQL_DATASOURCE != null && CLASS_SQL_DATASOURCE.isAssignableFrom(type))
                 || (CLASS_SQL_ROW_SET != null && CLASS_SQL_ROW_SET.isAssignableFrom(type));
     }
diff --git a/core/src/main/java/com/alibaba/fastjson2/util/JSONBDump.java b/core/src/main/java/com/alibaba/fastjson2/util/JSONBDump.java
index 5504cd8aed..d88ae22df6 100644
--- a/core/src/main/java/com/alibaba/fastjson2/util/JSONBDump.java
+++ b/core/src/main/java/com/alibaba/fastjson2/util/JSONBDump.java
@@ -213,7 +213,7 @@ private void dumpAny() {
                 int strlen = readLength();
 
                 String str;
-                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                     byte[] chars = new byte[strlen];
                     System.arraycopy(bytes, offset, chars, 0, strlen);
                     str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -229,7 +229,7 @@ private void dumpAny() {
                 int strlen = readLength();
 
                 String str;
-                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 1) {
+                if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN) {
                     byte[] chars = new byte[strlen];
                     System.arraycopy(bytes, offset, chars, 0, strlen);
                     str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -871,7 +871,7 @@ String readString() {
             strlen = readLength();
             strBegin = offset;
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 0) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && !JDKUtils.BIG_ENDIAN) {
                 byte[] chars = new byte[strlen];
                 System.arraycopy(bytes, offset, chars, 0, strlen);
                 String str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
@@ -884,7 +884,7 @@ String readString() {
             strlen = readLength();
             strBegin = offset;
 
-            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN == 1) {
+            if (JDKUtils.UNSAFE_UTF16_CREATOR != null && JDKUtils.BIG_ENDIAN) {
                 byte[] chars = new byte[strlen];
                 System.arraycopy(bytes, offset, chars, 0, strlen);
                 String str = JDKUtils.UNSAFE_UTF16_CREATOR.apply(chars);
diff --git a/core/src/main/java/com/alibaba/fastjson2/util/UnsafeUtils.java b/core/src/main/java/com/alibaba/fastjson2/util/UnsafeUtils.java
index 41d6792199..3b90644216 100644
--- a/core/src/main/java/com/alibaba/fastjson2/util/UnsafeUtils.java
+++ b/core/src/main/java/com/alibaba/fastjson2/util/UnsafeUtils.java
@@ -124,7 +124,7 @@ public String apply(byte[] bytes) {
             try {
                 Object str = UNSAFE.allocateInstance(String.class);
                 UNSAFE.putByte(str, coderOffset, (byte) 1);
-                UNSAFE.putObject(str, valueOffset, (byte[]) bytes);
+                UNSAFE.putObject(str, valueOffset, bytes);
                 return (String) str;
             } catch (Throwable ex) {
                 throw new JSONException("create string error");