How to use Java 8 Stream FlatMap Examples with List, Array » grokonez

How to use Java 8 Stream FlatMap Examples with List, Array » grokonez

In the tutorial, we will discover more aspect of Java 8 Stream API with flatMap() function by lots of examples. What we will do: Explain how Java 8 Stream FlatMap work? Apply Stream FlatMap on Java List, Array Now let’s do more details! Related posts: – Java 8 Stream Map Examples – Java 8 Stream … Continue reading "How to use Java 8 Stream FlatMap Examples with List, Array"

https://grokonez.com/java/java-8/how-to-use-java-8-stream-flatmap-examples-with-list-array

How to use Java 8 Stream FlatMap Examples with List, Array

In the tutorial, we will discover more aspect of Java 8 Stream API with flatMap() function by lots of examples. What we will do:

  • Explain how Java 8 Stream FlatMap work?
  • Apply Stream FlatMap on Java List, Array

Now let's do more details!

Related posts:

Java 8 Stream FlatMap

Java 8 Stream provides 2 mapping APIs: map() and flatMap()
  • Both map() & flatMap() is an intermediate operation.
  • Stream map() function is used to transform an input stream to a new output stream by applying a mapper function on each element.
  • What is a difference point with Stream flatMap() function?


<R> Stream<R> flatMap(Function<? super T, ? extends Stream<? extends R>> mapper);

The flatMap() function will do 2 things:

  • Apply mapper function to transform each element of input stream.
  • Then flattens the result to a new output stream. (Not with Java 8 Stream map() function)

    Stream FlatMap Java List Example

    Stream FlatMap Integer List Example

    We do a list of examples about Stream flatMap() function combining with others: map(), filter(), reduce()

More at: https://grokonez.com/java/java-8/how-to-use-java-8-stream-flatmap-examples-with-list-array

java8 stream flatmap list array

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How to use Java 8 Stream Reduce Examples with List and Array

Java 8 provides an extremely powerful abstract concept Stream with many useful mechanics for consuming and processing data in Java Collection. In the tutorial, We will do lots of examples to explore more the helpful of Stream API with reduction operation on the specific topic: “Java 8 Stream Reduce Collection”. What will we do? Explain … Continue reading "How to use Java 8 Stream Reduce Examples with List and Array"

How to use Java 8 Stream Map Examples with a List or Array » grokonez

Converting or transforming a List and Array Objects in Java is a common task when programming. In the tutorial, We show how to do the task with lots of Java examples code by 2 approaches: Using Traditional Solution with basic Looping Using a powerful API – Java 8 Stream Map Now let’s do details with … Continue reading "How to use Java 8 Stream Map Examples with a List or Array"

How to use Java 8 Stream Map Examples with a List or Array - ozenero

[no_toc] Converting or transforming a List and Array Objects in Java is a common task when programming. In the tutorial, We show how to do the task with lots of Java examples code by 2 approaches: Using Traditional Solution with basic Looping Using a powerful API – Java 8 Stream Map Now let’s do details … Continue reading "How to use Java 8 Stream Map Examples with a List or Array"

Java - How to use Stream Filter in Java 8 with List & Array Examples » grokonez

Java 8 provides an extremely powerful abstract concept Stream with many useful mechanics for consuming and processing data in Java Collection. In the tutorial, We will use lots of examples to explore more the helpful of Stream API with filtering function on the specific topic: “Filter Collection with Java 8 Stream”. What will we do? … Continue reading "Java – How to use Stream Filter in Java 8 with List & Array Examples"

Java - How to use Stream Filter in Java 8 with List & Array Examples - ozenero

[no_toc] Java 8 provides an extremely powerful abstract concept Stream with many useful mechanics for consuming and processing data in Java Collection. In the tutorial, We will use lots of examples to explore more the helpful of Stream API with filtering function on the specific topic: “Filter Collection with Java 8 Stream”. What will we … Continue reading "Java – How to use Stream Filter in Java 8 with List & Array Examples"