Scala method override in Java

Question

I have a method in Scala with below syntax . I want to override this method in a java sub class. I am not sure what will be the equivalent syntax in Java for this method .

def createRecord(rdd: RDD[(String, Array[(String, Int)])])

what is the return type of the method?

rogue-one
– rogue-one

2017-05-17 18:11:53 +00:00
Commented May 17, 2017 at 18:11 — rogue-one
– rogue-one, Commented May 17, 2017 at 18:11
Return type is Unit

BobCoder
– BobCoder

2017-05-17 18:14:15 +00:00
Commented May 17, 2017 at 18:14 — BobCoder
– BobCoder, Commented May 17, 2017 at 18:14

rogue-one · Accepted Answer · 2017-05-17 18:30:36Z

4

the below is the java equivalent of the scala method createRecord. The reason why Int in scala is converted to an Object in Java is provided here

 import org.apache.spark.rdd.RDD;
 import scala.Tuple2;
 public void createRecord(RDD<Tuple2<String, Tuple2<String, Object>[]>> rdd) {

 }

edited May 17, 2017 at 18:30

answered May 17, 2017 at 18:22

rogue-one

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Comments

Manish Mishra · Accepted Answer · 2017-05-17 18:28:10Z

1

You can use The Java API RDD of spark as well and Integer (a class ) here as:

import scala.Tuple2;
import org.apache.spark.api.java.JavaRDD

 public void method(JavaRDD<Tuple2<String,Tuple2<String,Integer>[]>> rdd)
  {
      return the equivalent implementation
  }

answered May 17, 2017 at 18:28

Manish Mishra

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