$show=/label

Java 8 Stream skip() Examples

SHARE:

A quick guide skip() method example to skip and discard the first n numbers of objects from the stream in java 8.

1. Overview

In this article, You'll learn how to use stream skip() method of java 8 and how to skip the first n objects from stream.

Java 8 Stream skip() Examples


2. Java 8 Stream skip() Syntax

skip() method is an intermediate operation that returns Stream of objects.

Stream<T> skip(long n)

This method returns a stream consisting of the remaining elements of this stream after discarding the first n elements of the stream. If this stream contains fewer than n elements then an empty stream will be returned.

skip() method takes a long parameter and returns Stream.

3. Java 8 Stream skip() Method

You've to remember the following points before using the skip() method.

A) skip() method is a stateful intermediate operation similar to the sorted(), filter() methods.

B) Returns a Stream after discarding first n elements from the stream.

C) If the stream has less than the number n given, it returns an empty sequential stream by calling the Stream.empty() method.

D) This is good for only sequential streams and must avoid in parallel streams for higher values of n.

E) If you use unordered infinite streams or unordered() streams may result in producing better results.

F) It just skips the first n values from the stream that the order is present in the underlying base stream or previous intermediate operation call output.

G) n value can not be negative. If n is negative, it throws java.lang.IllegalArgumentException.

4. Java 8 Stream skip() Example 1

Understand the skip() example program to skip the first 10 numbers from infinite numbers series and collect the next 20 values using limit() method. 

If you are using infinite streams then you must have to use the limit() method. Otherwise, stream will end up in memory-related issues.

package com.javaprogramto.java8.skip;

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Skip10ValuesExample {
    public static void main(String[] args) {

        Stream<Integer> numnerSeries = Stream.iterate(1, i -> i+ 1);

        List<Integer> next20Numbers = numnerSeries.skip(10).limit(20).collect(Collectors.toList());

        System.out.println("20 Numbers after skipping first 10 numbers");
        next20Numbers.forEach(number -> System.out.println(number));
    }
}

Output:

20 Numbers after skipping first 10 numbers
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

5. Java 8 Stream skip() Example 2

Example to skip the first 5 even numbers from List.

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Skip5EvenNumbersExample {
    public static void main(String[] args) {

        Stream<Integer> evenNumbers = Stream.of(2, 4, 5, 8, 10, 12, 14, 16, 18, 20);

        List<Integer> next20Numbers = evenNumbers
                .skip(5)
                .collect(Collectors.toList());

        System.out.println("skipping first 5 even Numbers");
        next20Numbers.forEach(number -> System.out.println(number));
    }
}

Output:

skipping first 5 even Numbers
12
14
16
18
20

6. Java 8 Stream skip() Example 3

What is the output if a negative index is passed to skip() method.

public class SkipNegativeIndexExample {
    public static void main(String[] args) {

        Stream<Integer> numbers = Stream.of(1, 2, 3);

        List<Integer> expectingError = numbers
                .skip(-25)
                .collect(Collectors.toList());

        System.out.println("skipping first 5 even Numbers");
        expectingError.forEach(number -> System.out.println(number));
    }
}

Output:

Exception in thread "main" java.lang.IllegalArgumentException: -25
	at java.base/java.util.stream.ReferencePipeline.skip(ReferencePipeline.java:476)
	at com.javaprogramto.java8.skip.SkipNegativeIndexExample.main(SkipNegativeIndexExample.java:13)


7. Conclusion

In this article, you've seen how to use the java 8 stream skip() method with examples.

Skip10ValuesExample.java

Skip5EvenNumbersExample.java

SkipNegativeIndexExample.java

How to create infinite streams in java 8?

Intermediate Operations

Stream API skip()

COMMENTS

BLOGGER

About Us

Author: Venkatesh - I love to learn and share the technical stuff.
Name

accumulo,1,ActiveMQ,2,Adsense,1,API,37,ArrayList,16,Arrays,7,Bean Creation,3,Bean Scopes,1,BiConsumer,1,Blogger Tips,1,Books,1,C Programming,1,Collection,5,Collections,22,Collector,1,Command Line,1,Compile Errors,1,Configurations,7,Constants,1,Control Statements,8,Conversions,6,Core Java,81,Corona India,1,Create,2,CSS,1,Date,3,Date Time API,4,Dictionary,1,Difference,1,Download,1,Eclipse,2,Efficiently,1,Error,1,Errors,1,Exception,1,Exceptions,3,Fast,1,Files,9,Float,1,Font,1,Form,1,Freshers,1,Function,3,Functional Interface,2,Garbage Collector,1,Generics,4,Git,4,Grant,1,Grep,1,HashMap,1,HomeBrew,2,HTML,2,HttpClient,2,Immutable,1,Installation,1,Interview Questions,5,Iterate,2,Jackson API,3,Java,29,Java 10,1,Java 11,5,Java 12,5,Java 13,2,Java 14,2,Java 8,66,Java 8 Difference,2,Java 8 Stream Conversions,2,java 8 Stream Examples,3,Java 9,1,Java Conversions,11,Java Design Patterns,1,Java Files,1,Java Program,2,Java Programs,65,java.lang,5,java.util. function,1,jQuery,1,Kotlin,10,Kotlin Conversions,3,Kotlin Programs,6,Lambda,1,lang,29,Leap Year,1,live updates,1,Logging,1,Mac OS,2,Math,1,Maven,1,Method References,1,Mockito,1,MongoDB,3,New Features,1,Operations,1,Optional,6,Oracle,5,Oracle 18C,1,Partition,1,Patterns,1,Programs,1,Property,1,Python,2,Quarkus,1,Read,1,Real Time,1,Recursion,2,Remove,2,Rest API,1,Schedules,1,Serialization,1,Servlet,1,Sort,1,Sorting Techniques,8,Spring,2,Spring Boot,23,Spring Email,1,Spring MVC,1,Streams,21,String,58,String Programs,9,String Revese,1,Swing,1,System,1,Tags,1,Threads,10,Tomcat,1,Tomcat 8,1,Troubleshoot,16,Unix,2,Updates,3,util,5,While Loop,1,
ltr
item
JavaProgramTo.com: Java 8 Stream skip() Examples
Java 8 Stream skip() Examples
A quick guide skip() method example to skip and discard the first n numbers of objects from the stream in java 8.
https://1.bp.blogspot.com/-oeue0xJz_hg/XzlebOK1RwI/AAAAAAAAC6o/FKllLh3nGRcjp6pE8Ov0J3sAV4r_EkapgCLcBGAsYHQ/w640-h365/Java%2B8%2BStream%2Bskip%2528%2529%2BExamples.png
https://1.bp.blogspot.com/-oeue0xJz_hg/XzlebOK1RwI/AAAAAAAAC6o/FKllLh3nGRcjp6pE8Ov0J3sAV4r_EkapgCLcBGAsYHQ/s72-w640-c-h365/Java%2B8%2BStream%2Bskip%2528%2529%2BExamples.png
JavaProgramTo.com
https://www.javaprogramto.com/2020/08/java-8-stream-skip-example.html
https://www.javaprogramto.com/
https://www.javaprogramto.com/
https://www.javaprogramto.com/2020/08/java-8-stream-skip-example.html
true
3124782013468838591
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share to a social network STEP 2: Click the link on your social network Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy Table of Content