Click here to watch in Youtube :
https://www.youtube.com/watch?v=YpRVOTT5w9U&list=UUhwKlOVR041tngjerWxVccw
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How Lambda expressions used in Streams | Java 8 streams | Streams in Java 8 |
public class Student implements Comparable<Student> { private String name; private int score; public Student(String name, int score) { this.name = name; this.score = score; } public void setName(String name) { this.name = name; } public String getName() { return this.name; } public void setScore(int score) { this.score = score; } public int getScore() { return this.score; } public String toString() { return this.name + " - " + this.score; } public int compareTo(Student another) { return another.getScore() - this.score; } }StreamDemo.java
import java.util.ArrayList; import java.util.List; public class StreamDemo { public static void main(String[] args) { List<Student> listStudents = new ArrayList<>(); listStudents.add(new Student("Alice", 82)); listStudents.add(new Student("Bob", 90)); listStudents.add(new Student("Carol", 67)); listStudents.add(new Student("David", 80)); listStudents.add(new Student("Eric", 55)); listStudents.add(new Student("Frank", 49)); listStudents.add(new Student("Gary", 88)); listStudents.add(new Student("Henry", 98)); listStudents.add(new Student("Ivan", 66)); listStudents.add(new Student("John", 52)); listStudents.stream().sorted().filter(s -> s.getScore() >= 70) .forEach(System.out::println); System.out.println("------------------------------"); listStudents.stream().filter(s -> s.getScore() >= 70) .map(s -> s.getName()).sorted() .forEach(name -> System.out.println(name)); } }Output
Henry - 98 Bob - 90 Gary - 88 Alice - 82 David - 80 ------------------------------ Alice Bob David Gary HenryClick the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/StreamDemo_StreamAndLambda.zip?attredirects=0&d=1
Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/StreamDemo_StreamAndLambda
Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/5eb462211ac2fd9fb1bace2049e170a49c5caa69/BasicJava/StreamDemo_StreamAndLambda/?at=master
See also:
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