ArrayList<String>listOne=newArrayList<>(Arrays.asList("a","b","c"));ArrayList<String>listTwo=newArrayList<>(Arrays.asList("c","d","e"));//Add items from Lists into SetSet<String>set=newLinkedHashSet<>(listOne);set.addAll(listTwo);//Convert Set to ArrayListArrayList<String>combinedLis...
The simplest way is add the Apache Commons Lang library, and use ArrayUtils. addAll to join arrays. This method supports both primitive and object type arrays. JoinArray.java package com.mkyong.example.array; import org.apache.commons.lang3.ArrayUtils; import java.util.Arrays; public class Join...
In this short article, you will learn about different ways to concatenate two arrays into one in Java. Using A Loop The simplest way to concatenate two arrays in Java is by using the for loop: int[] arr1 = {1, 2, 3, 4}; int[] arr2 = {5, 6, 7, 8}; // create a new ...
String Date to Timestamp Read File to String Remove Punctuations from String Sort String in Java Multiply Strings String to Date Conversion String to JSON Date Time Java 8 Date Time API Java Arrays Array to List Initializing Arrays Java stream to array Join Arrays Array To...
int[]numbers={3,2,1};Arrays.sort(numbers);System.out.println(Arrays.toString(numbers));// Output:// [1, 2, 3] Java Copy In this example, we useArrays.sort()to sort an array of integers. The output shows the array sorted in ascending order. ...
Concatenate Using Java Streams flatMap MethodWe will use flatMap method of Java Streams to merge two collections.Before we do that, the following are the two collections that we want to join together.Collection<Integer> collection1 = List.of(1, 2, 3); Collection<Integer> collection2 = List...
We've taken a look at how to concatenate strings in JavaScript using the + operator, the join() method of the Arrays class as well as the concat() method of the String class. We've taken a look at the official stance and ran our own tests to see which approach is the most performa...
importjava.util.Arrays; importjava.util.List; importjava.util.stream.Collectors; /** * @author Crunchify.com Object Joining Example In java8 * */ publicclassCrunchifyCompanyListJoinerTutorial{ publicstaticvoidmain(String[]args){ List<CrunchifyCompany>crunchifyList = Arrays...
Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API, additional types not found in the JDK like Bags, Multimaps and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. ...
importjava.util.stream.Stream;publicclassMain{publicstaticvoidmain(String[]args){Stream<Integer>numStream=Stream.of(1,3,5,4,2);numStream.sorted().forEach(System.out::println);}} Program output. Output 12345 3.2. Descending Order To sort in reverse order, useComparator.reverseOrder()insorted...