In this example we learn filter operations in streams on java
In Java 8 it is easy to filter record from an arraylist
Streams API providing powerful features to filter an record from a list without modifying it
This will returns a stream consisting of the elements of this stream that match the given predicate.
Syntax
Stream filter(Predicate<? super T> predicate)<br><br>list.stream().filter({operations});
Example
import java.util.ArrayList;
import java.util.List;
public class FilterExample {
public static void main(String[] args) {
List studentList = new ArrayList();
Student student = null;
student = new Student();
student.setId(1);
student.setName("Rajesh");
student.setAddress("Mumbai");
studentList.add(student);
student = new Student();
student.setId(1);
student.setName("Kumar");
student.setAddress("Chennai");
studentList.add(student);
studentList.stream().filter(x -> x.getName().equals("Rajesh"))
.forEach(x -> System.out.print(x.getAddress()));
}
}
Person.java
public class Student {
private int id;
private String name;
private String address;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}Output
MumbaiReference
Related Articles
Iterate list using streams in java
iterate stream with index in Java8
