/java8

Java 8 features

Primary LanguageJava

java8

Java 8 features

Differences between Java 8 Map() Vs flatMap() :

map() flatMap()
It processes stream of values. It processes stream of stream of values.
It does only mapping. It performs mapping as well as flattening.
It’s mapper function produces single value for each input value. It’s mapper function produces multiple values for each input value.
It is a One-To-One mapping. It is a One-To-Many mapping.
Data Transformation : From Stream to Stream Data Transformation : From Stream<Stream to Stream
Use this method when the mapper function is producing a single value for each input value. Use this method when the mapper function is producing multiple values for each input value.