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최종연산 2 ● allmatch, anymatch, nonmatch package org.example; import java.util.stream.IntStream; public class Main { public static void main(String[] args) { boolean result = IntStream.of(1, 2, 3, 4, 5) .allMatch(value -> value % 2 == 0); System.out.println(result); System.out.println(); result = IntStream.of(1, 2, 3, 4, 5) .anyMatch(value -> value % 2 == 0); System.out.println(result); System.out.println.. 2024. 2. 16.
스트림의 최종연산 package org.example; import java.util.stream.IntStream; public class Main10 { public static void main(String[] args) { int sum = IntStream.of(1,3,5,7,9) .sum(); System.out.println("sum = "+sum); long count = IntStream.of(1,3,5,7,9) .count(); System.out.println("count = "+count); IntStream.of(1,3,5,7,9) .average() .ifPresent(value -> System.out.println("average = "+value)); IntStream.of(1,3,5,7,9.. 2024. 2. 15.
스트림 2 ● Stream of package org.example; import java.util.Arrays; import java.util.stream.Stream; public class Main8 { public static void main(String[] args) { Stream.of(11, 22, 33, 44, 55) .forEach(System.out::println); //매서드 참조 System.out.println(); Stream.of("so simple") .forEach(System.out::println); System.out.println(); Stream.of(Arrays.asList("11", "aaa", "bbb"), Arrays.asList("test")) .forEach(S.. 2024. 2. 15.
필터링 과 맵핑 ●필터링 package org.example; import java.util.Arrays; import java.util.List; public class Main4 { public static void main(String[] args) { Person p1 = new Person("홍길동",20); Person p2 = new Person("김길동",40); Person p3 = new Person("이길동",30); Person p4 = new Person("박길동",50); List list = Arrays.asList(p1,p2,p3,p4); list.stream().filter(person -> person.getAge()==20).forEach(System.out::println); // 필.. 2024. 2. 15.

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