[BUILD][MINOR] Fix java style check issues

## What changes were proposed in this pull request?

This patch fixes a few recently introduced java style check errors in master and release branch.

As an aside, given that [java linting currently fails](#10763
) on machines with a clean maven cache, it'd be great to find another workaround to [re-enable the java style checks](https://github.com/apache/spark/blob/3a07eff5af601511e97a05e6fea0e3d48f74c4f0/dev/run-tests.py#L577) as part of Spark PRB.

/cc zsxwing JoshRosen srowen for any suggestions

## How was this patch tested?

Manual Check

Author: Sameer Agarwal <[email protected]>

Closes #20323 from sameeragarwal/java.

(cherry picked from commit 9c4b998)
Signed-off-by: Sameer Agarwal <[email protected]>

Author: sameeragarwal

sql/core/src/main/java/org/apache/spark/sql/sources/v2/writer/DataSourceV2Writer.java

@@ -28,8 +28,10 @@
 /**
  * A data source writer that is returned by
  * {@link WriteSupport#createWriter(String, StructType, SaveMode, DataSourceV2Options)}/
- * {@link org.apache.spark.sql.sources.v2.streaming.MicroBatchWriteSupport#createMicroBatchWriter(String, long, StructType, OutputMode, DataSourceV2Options)}/
- * {@link org.apache.spark.sql.sources.v2.streaming.ContinuousWriteSupport#createContinuousWriter(String, StructType, OutputMode, DataSourceV2Options)}.
+ * {@link org.apache.spark.sql.sources.v2.streaming.MicroBatchWriteSupport#createMicroBatchWriter(
+ * String, long, StructType, OutputMode, DataSourceV2Options)}/
+ * {@link org.apache.spark.sql.sources.v2.streaming.ContinuousWriteSupport#createContinuousWriter(
+ * String, StructType, OutputMode, DataSourceV2Options)}.
  * It can mix in various writing optimization interfaces to speed up the data saving. The actual
  * writing logic is delegated to {@link DataWriter}.
  *

sql/core/src/main/java/org/apache/spark/sql/vectorized/ArrowColumnVector.java

@@ -556,8 +556,9 @@ final int getArrayOffset(int rowId) {
   /**
    * Any call to "get" method will throw UnsupportedOperationException.
    *
-   * Access struct values in a ArrowColumnVector doesn't use this accessor. Instead, it uses getStruct() method defined
-   * in the parent class. Any call to "get" method in this class is a bug in the code.
+   * Access struct values in a ArrowColumnVector doesn't use this accessor. Instead, it uses
+   * getStruct() method defined in the parent class. Any call to "get" method in this class is a
+   * bug in the code.
    *
    */
   private static class StructAccessor extends ArrowVectorAccessor {

sql/core/src/test/java/test/org/apache/spark/sql/sources/v2/JavaBatchDataSourceV2.java

@@ -69,7 +69,8 @@ public DataReader<ColumnarBatch> createDataReader() {
       ColumnVector[] vectors = new ColumnVector[2];
       vectors[0] = i;
       vectors[1] = j;
-      this.batch = new ColumnarBatch(new StructType().add("i", "int").add("j", "int"), vectors, BATCH_SIZE);
+      this.batch =
+        new ColumnarBatch(new StructType().add("i", "int").add("j", "int"), vectors, BATCH_SIZE);
       return this;
     }