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Person.java
enum Gender { MALE, FEMALE } public class Person { private String name; private String email; private Gender gender; private int age; public Person(String name, String email, Gender gender, int age) { super(); this.name = name; this.email = email; this.gender = gender; this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public Gender getGender() { return gender; } public void setGender(Gender gender) { this.gender = gender; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } }StreamAllMatchDemo.java
import java.util.ArrayList; import java.util.List; public class StreamAllMatchDemo { public static void main(String[] args) { List<Person> personList = new ArrayList<>(); personList.add(new Person("Alice","alice@gmail.com", Gender.FEMALE, 26)); personList.add(new Person("Bob","bob@gmail.com", Gender.MALE, 32)); personList.add(new Person("Carol","carol@gmail.com",Gender.FEMALE, 23)); personList.add(new Person("David","david@gmail.com", Gender.MALE, 39)); personList.add(new Person("Eric","eric@gmail.com", Gender.MALE, 26)); personList.add(new Person("Frank","frank@gmail.com",Gender.MALE, 33)); personList.add(new Person("Gibb","gibb@gmail.com", Gender.MALE, 27)); personList.add(new Person("Henry","henry@gmail.com", Gender.MALE, 30)); personList.add(new Person("Isabell","isabell@gmail.com",Gender.FEMALE, 22)); personList.add(new Person("Jane","jane@gmail.com",Gender.FEMALE, 24)); /* * The allMatch()operation answers the question: Do all elements in the * stream meet this condition? It returns true if and only if all * elements match a provided predicate, otherwise return false. * * This is a short-circuiting terminal operation because the operation * stops immediately if any unmatched element is found (just like * short-circuit behavior of the AND operator). The following example * checks if all persons are male: */ boolean areAllMale = personList.stream() .allMatch(p -> p.getGender().equals(Gender.MALE)); System.out.println("Are all persons male? : " + areAllMale); boolean allUseGMail = personList.stream() .allMatch(p -> p.getEmail().endsWith("gmail.com")); System.out.println("Does everyone use GMail? : " + allUseGMail); } }Output
Are all persons male? : false Does everyone use GMail? : trueClick the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/StreamDemo_TOP_allmatch_Person.zip?attredirects=0&d=1
Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/StreamDemo_TOP_allmatch_Person
Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/17906082b9d83230789adc7b5df551c73ce2b46f/BasicJava/StreamDemo_TOP_allmatch_Person/?at=master
See also:
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