importjava.util.*;importjava.util.stream.Collectors;publicclassStringSplitExample{publicstaticvoidmain(String[] args){ List<String> sentences = Arrays.asList("Java is powerful","Stream API is useful","flatMap is amazing");// 使用 flatMap 拆分字符串为单词流List<String> words = sentences.stream...
2. show all pairs of two arrays In order to show all possible pairs we need handle every item of numbers2 in the stream of number1. There are multiple stream when invokenumber2.stream()method. So we needflatMapto handle multiple stream and put the result in a new stream. List<Integer...
第二种方式:flatMap(对流扁平化处理) 代码语言:javascript 代码运行次数:0 运行 AI代码解释 String[]words=newString[]{"Hello","World"};List<String>a=Arrays.stream(words).map(word->word.split("")).flatMap(Arrays::stream).distinct().collect(toList());a.forEach(System.out::print); 结果输出...
publicclassNestedListExample{ publicstaticvoidmain(String[] args){ List<List<String>> nestedList = Arrays.asList( Arrays.asList("a","b"), Arrays.asList("c","d","e"), Arrays.asList("f","g") ); // 使用 flatMap 将嵌套集合展开为单一流 List<String> flatList = nestedList.stream()...
import java.util.stream.Collectors; public class StringSplitExample { public static void main(String[] args) { List<String> sentences = Arrays.asList( "Java is powerful", "Stream API is useful", "flatMap is amazing" ); // 使用 flatMap 拆分字符串为单词流 ...
1. Stream + String[] + flatMap 1.1 The below example will print an empty result, because filter() has no idea how to filter a stream of String[]. TestExample1.java package com.mkyong.java8; import java.util.Arrays; import java.util.stream.Stream; ...
Java 8 example ofStream.flatMap()function to get a singleListcontaining all elements from an array of arrays. Merging Arrays into a Single List String[][]dataArray=newString[][]{{"a","b"},{"c","d"},{"e","f"},{"g","h"}};List<String>listOfAllChars=Arrays.stream(dataArray)....
public class FlatMapExample { public static void main(String[] args) { List<String> words = Arrays.asList("hello", "world", "java"); words.stream() .flatMap(word -> Arrays.stream(word.split(""))) .forEach(System.out::println); ...
通过演示Demo中的代码可以了解map()和flatMap()的具体功能差异。 首先来一段简单的stream语法foreach方法的用法 演示Demo: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 List<String>funs=Arrays.asList("F","U","N");funs.stream().forEach(x->output(x)); ...
4. Usage of map() vs flatMap() UseStream.map()when we need to transform each element individually and the output has a one-to-one relationship with the input. For example, we can write a program to find the date of birth of all employees in a stream of employees. For each employee...