Re: [PR] [MINOR][DOCS] Correct the usage example of Dataset in Java. [spark]

["HyukjinKwon (via GitHub)" <gi...@apache.org>]

HyukjinKwon commented on code in PR #44342:
URL: https://github.com/apache/spark/pull/44342#discussion_r1446846063


##########
sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala:
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@@ -138,7 +138,7 @@ private[sql] object Dataset {
  * the following creates a new Dataset by applying a filter on the existing one:
  * {{{
  *   val names = people.map(_.name)  // in Scala; names is a Dataset[String]
- *   Dataset<String> names = people.map((Person p) -> p.name, Encoders.STRING));
+ *   Dataset<String> names = people.map((MapFunction<Person, String>) p -> p.name, Encoders.STRING()); // Java

Review Comment:
   ```suggestion
    *   Dataset<String> names = people.map(
    *     (MapFunction<Person, String>) p -> p.name, Encoders.STRING()); // Java
   ```



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