diff --git a/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/SpecificParquetRecordReaderBase.java b/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/SpecificParquetRecordReaderBase.java
index 10d6ed85a4080..daedfd7e78f5f 100644
--- a/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/SpecificParquetRecordReaderBase.java
+++ b/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/SpecificParquetRecordReaderBase.java
@@ -18,7 +18,6 @@
 
 package org.apache.spark.sql.execution.datasources.parquet;
 
-import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
diff --git a/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/VectorizedPlainValuesReader.java b/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/VectorizedPlainValuesReader.java
index aacefacfc1c1a..c62dc3d86386e 100644
--- a/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/VectorizedPlainValuesReader.java
+++ b/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/VectorizedPlainValuesReader.java
@@ -26,7 +26,6 @@
 
 import org.apache.parquet.column.values.ValuesReader;
 import org.apache.parquet.io.api.Binary;
-import org.apache.spark.unsafe.Platform;
 
 /**
  * An implementation of the Parquet PLAIN decoder that supports the vectorized interface.
diff --git a/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/partitioning/Distribution.java b/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/partitioning/Distribution.java
index d2ee9518d628f..5e32ba6952e1c 100644
--- a/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/partitioning/Distribution.java
+++ b/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/partitioning/Distribution.java
@@ -22,7 +22,8 @@
 
 /**
  * An interface to represent data distribution requirement, which specifies how the records should
- * be distributed among the data partitions(one {@link InputPartitionReader} outputs data for one partition).
+ * be distributed among the data partitions (one {@link InputPartitionReader} outputs data for one
+ * partition).
  * Note that this interface has nothing to do with the data ordering inside one
  * partition(the output records of a single {@link InputPartitionReader}).
  *
diff --git a/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/streaming/ContinuousReader.java b/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/streaming/ContinuousReader.java
index 716c5c0e9e15a..6e960bedf8020 100644
--- a/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/streaming/ContinuousReader.java
+++ b/sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/streaming/ContinuousReader.java
@@ -35,8 +35,8 @@
 @InterfaceStability.Evolving
 public interface ContinuousReader extends BaseStreamingSource, DataSourceReader {
     /**
-     * Merge partitioned offsets coming from {@link ContinuousInputPartitionReader} instances for each
-     * partition to a single global offset.
+     * Merge partitioned offsets coming from {@link ContinuousInputPartitionReader} instances
+     * for each partition to a single global offset.
      */
     Offset mergeOffsets(PartitionOffset[] offsets);
 
diff --git a/sql/core/src/test/java/test/org/apache/spark/sql/sources/v2/JavaAdvancedDataSourceV2.java b/sql/core/src/test/java/test/org/apache/spark/sql/sources/v2/JavaAdvancedDataSourceV2.java
index 714638e500c94..445cb29f5ee3a 100644
--- a/sql/core/src/test/java/test/org/apache/spark/sql/sources/v2/JavaAdvancedDataSourceV2.java
+++ b/sql/core/src/test/java/test/org/apache/spark/sql/sources/v2/JavaAdvancedDataSourceV2.java
@@ -107,7 +107,8 @@ public List<InputPartition<Row>> planInputPartitions() {
     }
   }
 
-  static class JavaAdvancedInputPartition implements InputPartition<Row>, InputPartitionReader<Row> {
+  static class JavaAdvancedInputPartition implements InputPartition<Row>,
+      InputPartitionReader<Row> {
     private int start;
     private int end;
     private StructType requiredSchema;