Click here to watch in Youtube :
https://www.youtube.com/watch?v=Svhh7MEDgdM&list=UUhwKlOVR041tngjerWxVccw
Person.java
public class Person { private String name; private int age; public Person(String name, int age) { super(); this.name = name; this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } @Override public String toString() { return "Person [name=" + name + ", age=" + age + "]"; } }PersonFilter.java
@FunctionalInterface public interface PersonFilter { public boolean filter(Person person); }NonLambdaDemo.java
import java.util.Arrays; import java.util.List; public class NonLambdaDemo { public static void main(String[] args) { List<Person> personList = Arrays.asList( new Person("Carla", 33), new Person("Balu", 32), new Person("Bharth", 40), new Person("Ajay", 31)); System.out.println("------------Name Starts with B---------"); PersonFilter personFilter = new PersonFilter() { @Override public boolean filter(Person person) { return person.getName().startsWith("B"); } }; printNameBeginWith_B(personList, personFilter); System.out.println("---------------------------------"); } /* * Method to print all people that have name begins with B. */ private static void printNameBeginWith_B(List<Person> personList, PersonFilter personFilter) { for (Person person : personList) { if (personFilter.filter(person)) { System.out.println(person); } } } }Output
------------Name Starts with B--------- Person [name=Balu, age=32] Person [name=Bharth, age=40] ---------------------------------LambdaDemo.java
import java.util.Arrays; import java.util.List; public class LambdaDemo { public static void main(String[] args) { List<Person> personList = Arrays.asList( new Person("Carla", 33), new Person("Balu", 32), new Person("Bharth", 40), new Person("Ajay", 31)); System.out.println("------------Name Starts with B---------"); PersonFilter personFilter = person -> person.getName().startsWith("B"); printNameBeginWith_B(personList,personFilter); System.out.println("----------------------------------------"); } /* * Method to print all people that have name begins with B. */ private static void printNameBeginWith_B(List<Person> personList, PersonFilter personFilter) { for (Person person : personList) { if (personFilter.filter(person)) { System.out.println(person); } } } }Output
------------Name Starts with B--------- Person [name=Balu, age=32] Person [name=Bharth, age=40] ----------------------------------------Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/LambdaDemo_filter_person_App.zip?attredirects=0&d=1
Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/LambdaDemo_filter_person_App
Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/c1aa2efd864c22fbec84424255460b099194034f/BasicJava/LambdaDemo_filter_person_App/?at=master
See also:
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