Java 8 Stream - allMatch(),anyMatch() and noneMatch() Example

Stream.allMatch() method returns true if all the elements of the stream match the provided predicate condition.
Stream.anyMatch() method returns true if at least 1 of the elements of the stream match the provided predicate condition.
Stream.noneMatch() method returns true if none of the elements of the stream match the provided predicate condition.

Java 8 Stream - allMatch(),anyMatch() and noneMatch() example

package com.java.tutorials.java8; import java.util.List; public class JavaStreamExample { public static void main(String[] args) { List < Person > people = getPeople(); // All match boolean allMatch = people.stream().allMatch(person - > person.getAge() > 8); System.out.println(allMatch); // Any match boolean anyMatch = people.stream().anyMatch(person - > person.getAge() > 110); System.out.println(anyMatch); // None match boolean noneMatch = people.stream().noneMatch(person - > person.getName().equals("Antonio")); System.out.println(noneMatch); } private static List < Person > getPeople() { return List.of(new Person("Antonio", 20, Gender.MALE), new Person("Alina Smith", 33, Gender.FEMALE), new Person("Helen White", 57, Gender.FEMALE), new Person("Alex Boz", 14, Gender.MALE), new Person("Jamie Goa", 99, Gender.MALE), new Person("Anna Cook", 7, Gender.FEMALE), new Person("Zelda Brown", 120, Gender.FEMALE)); } } enum Gender { MALE, FEMALE } class Person { private final String name; private final int age; private final Gender gender; public Person(String name, int age, Gender gender) { this.name = name; this.age = age; this.gender = gender; } public String getName() { return name; } public int getAge() { return age; } public Gender getGender() { return gender; } @Override public String toString() { return "Person{" + "name='" + name + '\'' + ", age=" + age + ", gender=" + gender + '}'; } }
Output:
false true false

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