Java Stream filter() example 

In the following example, we are fetching filtered data as a list.

package govind;

public class Student {

           

            int sid;

            String sname;

            float smarks;

            public Student(int sid, String sname, float smarks) {

                        super();

                        this.sid = sid;

                        this.sname = sname;

                        this.smarks = smarks;

            }

           

}

package govind;

import java.util.ArrayList;

import java.util.List;

import java.util.stream.Collector;

import java.util.stream.Collectors;

import java.util.stream.Stream;

public class StudentMain {

            public static void main(String[] args) {

                        List<Student> l=new ArrayList<>();

                        Student s1=new Student(101, "govind", 455.00f);

                        Student s2=new Student(102, "sanjay", 330.00f);

                        Student s3=new Student(103, "mani",   395.00f);

                        Student s4=new Student(104, "ajit", 460.00f);

                        Student s5=new Student(105, "krishna", 490.00f);

                        l.add(s1);

                        l.add(s2);

                        l.add(s3);

                        l.add(s4);

                        l.add(s5);

                       

                       

                       

                       

                                                 List<Float> markslist = l.stream()

                                                .filter(s->s.smarks>400)//filtering price

                                                .map(sm->sm.smarks)//fetching price

                                                .collect(Collectors.toList());

                                                 System.out.println(markslist);

                       

                       

            }

}

o/p:----------------------------------

[455.0, 460.0, 490.0]