Java 8 Streams Filter a List Example

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In this tutorial, we will see “How to use Streams to Filter a List in Java 8?”. We are going to use how Java 8 Streams API can be used to filter an ArrayList. Java 8 streams filter example

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/** 
 * Filter a List using Java8 Streams 
 * @author Deepak Verma 
 */
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
public class Filter_List_Using_Java8_Streams {
    public static void main(String[] args) {
        List&lt;Actor&gt; listOfActors = getActors();
        
        var filteredResult = listOfActors.stream()
        		                         .filter(person -&gt; person.getAge() &gt; 45)
                                         .collect(Collectors.toList());
        System.out.println("Filtered Result:\n"+filteredResult.toString());
        
    }
    static List &lt;Actor&gt; getActors() {
        List &lt;Actor&gt; actors = new ArrayList &lt;Actor&gt; ();
        actors.add(new Actor(5, "yashu"));
        actors.add(new Actor(64, "gaurangee"));
        actors.add(new Actor(93, "isha"));
        actors.add(new Actor(8, "deepak"));
        actors.add(new Actor(87, "yashi"));
        return actors;
    }
}

class Actor {
    int age;
    String name;
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

    public Actor(int age, String name) {
        this.name = name;
        this.age = age;
    }
    
    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("Actor{");
        sb.append("name=").append(name);
        sb.append(", age=").append(age);
        sb.append('}');
        return sb.toString();
    }
}

/**

* Filter a List using Java8 Streams

* @author Deepak Verma

import java.util.ArrayList;

import java.util.List;

import java.util.stream.Collectors;

public class Filter_List_Using_Java8_Streams {

public static void main(String[] args) {

List<Actor> listOfActors = getActors();

var filteredResult = listOfActors.stream()

.filter(person -> person.getAge() > 45)

.collect(Collectors.toList());

System.out.println("Filtered Result:\n"+filteredResult.toString());

}

static List <Actor> getActors() {

List <Actor> actors = new ArrayList <Actor> ();

actors.add(new Actor(5, "yashu"));

actors.add(new Actor(64, "gaurangee"));

actors.add(new Actor(93, "isha"));

actors.add(new Actor(8, "deepak"));

actors.add(new Actor(87, "yashi"));

return actors;

}

class Actor {

int age;

String name;

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public Actor(int age, String name) {

this.name = name;

this.age = age;

}

@Override

public String toString() {

final StringBuilder sb = new StringBuilder("Actor{");

sb.append("name=").append(name);

sb.append(", age=").append(age);

sb.append('}');

return sb.toString();

}

Output:

Filtered Result:
[Actor{name=gaurangee, age=64}, Actor{name=isha, age=93}, Actor{name=yashi, age=87}]

1 2	Filtered Result: [Actor{name=gaurangee, age=64}, Actor{name=isha, age=93}, Actor{name=yashi, age=87}]

Java 8 streams filter example

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Author

Deepak Verma
Deepak Verma is a Test Automation Consultant and Software development Engineer for more than 10 years. His mission is to help you become an In-demand full stack automation tester. He is also the founder of Techndeck, a blog and online coaching platform dedicated to helping you succeed with all the automation basics to advanced testing automation tricks.
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Java 8 Streams Filter a List Example

Filter List using ‘Java 8 Streams’

Other Useful References:

Filter Java ArrayList

Filter Java ArrayList

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Java 8 Streams Filter a List Example

Filter List using ‘Java 8 Streams’

Other Useful References:

Filter Java ArrayList

Filter Java ArrayList

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