diff --git a/java/dataset/src/main/cpp/jni_wrapper.cc b/java/dataset/src/main/cpp/jni_wrapper.cc
index 2b70aa2ff02c5..e6462974d8a9d 100644
--- a/java/dataset/src/main/cpp/jni_wrapper.cc
+++ b/java/dataset/src/main/cpp/jni_wrapper.cc
@@ -157,7 +157,7 @@ arrow::Result<std::shared_ptr<arrow::dataset::FileFormat>> GetFileFormat(
 
 arrow::Result<std::shared_ptr<arrow::dataset::FragmentScanOptions>>
 GetFragmentScanOptions(jint file_format_id,
-                       const std::unordered_map<std::string, string>& configs) {
+                       const std::unordered_map<std::string, std::string>& configs) {
   switch (file_format_id) {
 #ifdef ARROW_CSV
     case 3:
@@ -574,11 +574,11 @@ JNIEXPORT jlong JNICALL Java_org_apache_arrow_dataset_jni_JniWrapper_createScann
     JniAssertOkOrThrow(scanner_builder->Filter(*filter_expr));
   }
   if (file_format_id != -1 && options != nullptr) {
-    std::unordered_map<std::string, std::string> optionMap;
+    std::unordered_map<std::string, std::string> option_map;
     std::shared_ptr<arrow::Buffer> buffer = LoadArrowBufferFromByteBuffer(env, options);
-    JniAssertOkOrThrow(arrow::engine::DeserializeMap(*buffer, optionMap));
+    JniAssertOkOrThrow(arrow::engine::DeserializeMap(*buffer, option_map));
     std::shared_ptr<arrow::dataset::FragmentScanOptions> scan_options =
-        JniGetOrThrow(GetragmentScanOptions(file_format_id, optionsMap));
+        JniGetOrThrow(GetFragmentScanOptions(file_format_id, option_map));
     JniAssertOkOrThrow(scanner_builder->FragmentScanOptions(scan_options));
   }
   JniAssertOkOrThrow(scanner_builder->BatchSize(batch_size));
@@ -701,11 +701,11 @@ Java_org_apache_arrow_dataset_file_JniWrapper_makeFileSystemDatasetFactory__Ljav
   std::shared_ptr<arrow::dataset::FileFormat> file_format =
       JniGetOrThrow(GetFileFormat(file_format_id));
   if (options != nullptr) {
-    std::unordered_map<std::string, std::string> optionMap;
+    std::unordered_map<std::string, std::string> option_map;
     std::shared_ptr<arrow::Buffer> buffer = LoadArrowBufferFromByteBuffer(env, options);
-    JniAssertOkOrThrow(arrow::engine::DeserializeMap(*buffer, optionMap));
+    JniAssertOkOrThrow(arrow::engine::DeserializeMap(*buffer, option_map));
     std::shared_ptr<arrow::dataset::FragmentScanOptions> scan_options =
-        JniGetOrThrow(GetragmentScanOptions(file_format_id, optionsMap));
+        JniGetOrThrow(GetFragmentScanOptions(file_format_id, option_map));
     file_format->default_fragment_scan_options = scan_options;
   }
   arrow::dataset::FileSystemFactoryOptions options;
@@ -729,11 +729,11 @@ Java_org_apache_arrow_dataset_file_JniWrapper_makeFileSystemDatasetFactory___3Lj
   std::shared_ptr<arrow::dataset::FileFormat> file_format =
       JniGetOrThrow(GetFileFormat(file_format_id));
   if (options != nullptr) {
-    std::unordered_map<std::string, std::string> optionMap;
+    std::unordered_map<std::string, std::string> option_map;
     std::shared_ptr<arrow::Buffer> buffer = LoadArrowBufferFromByteBuffer(env, options);
-    JniAssertOkOrThrow(arrow::engine::DeserializeMap(*buffer, optionMap));
+    JniAssertOkOrThrow(arrow::engine::DeserializeMap(*buffer, option_map));
     std::shared_ptr<arrow::dataset::FragmentScanOptions> scan_options =
-        JniGetOrThrow(GetragmentScanOptions(file_format_id, optionsMap));
+        JniGetOrThrow(GetFragmentScanOptions(file_format_id, option_map));
     file_format->default_fragment_scan_options = scan_options;
   }
   arrow::dataset::FileSystemFactoryOptions options;