DataScience

Scala is pure object oriented programming language and it had lots of improvement over Java semantics like generics and type casting. It has clean up the issues like diamond relationship or implicit objects to move more closure to functional programming language. Is Scala is better than other programming language? ·        Lots of focus on using generics like in Arrays and implementation of Any, AnyRef and AnyVal makes it best use to unstructural data processing. ·        Scala has immutable “val” as a first class language feature. The “val” of scala is similar to Java final variables. we have Var which can be mutable. ·        Scala lets ‘if blocks’, ‘for-yield loops’, and ‘code’ in braces to return a value. It is more preferable, and eliminates the need for a separate ternary operator. ·        Singleton has singleton objects rather than C++/Java/ C# classi...

Java based code on calcuating the word cound -     import scala.Tuple2; public class WordCountingApp { public static void main(String[] args) throws InterruptedException {         Logger.getLogger("org")             .setLevel(Level.OFF);         Logger.getLogger("akka")             .setLevel(Level.OFF);           Map<String, Object> kafkaParams = new HashMap<>();         kafkaParams.put("bootstrap.servers", "localhost:9092");         kafkaParams.put("key.deserializer", StringDeserializer.class);         kafkaParams.put("value.deserializer", StringDeserializer.class);         kafkaParams.put("group.id", "use_a_separate_group_id_for_each_stream");         kafkaParams.put("auto.offset.reset", "latest");     ...

                                        Data Science -