Lambda expressions and streams made easy: A quick guide to functional programming in Java (programming made easy Book 1) by Stefan Schuddinck

Author:Stefan Schuddinck [Schuddinck, Stefan]
Language: eng
Format: epub
Published: 2018-07-06T23:00:00+00:00

3.7Sequence of numbers

class Main {

public static void main(String[] args) {

IntStream.rangeClosed(1, 10).forEach(number -> System.out.println(number));

IntStream.range(1, 10).forEach(number -> System.out.println(number));

4.

Filter

Sometimes you might want to work with only a subset of the elements. To do so, you can use the filter method.

For example if you want to create a subset of the list with fruits, which contains only those strings whose length is more than 6 characters, you use a filter:

class Main {

public static void main(String[] args) {

Stream.of("apple", "cherries", "banana", "avocado")

.filter(fruit -> fruit.length()>6)

.forEach(fruit -> System.out.println(fruit));

}}

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