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...
String[] result = ArrayUtils.addAll(s1, s2); System.out.println(Arrays.toString(result)); int [] int1 = new int[]{1,2,3}; int[] int2 = new int[]{4,5,6}; int[] result2 = ArrayUtils.addAll(int1, int2); System.out.println(Arrays.toString(result2)); } } Output [a, b,...
Java has a very helpfulArraysclass located in thejava.utilpackage. This class helps you when working with arrays by providing you with useful methods for common use cases. This means you don’t have to reinvent the wheel and you can save yourself redundant efforts. Here are some of the mos...
Learn toconcatenate two primitive arrays or objects arraysto create a new array consisting of the items from both arrays. We will learn tomerge array itemsusing simplefor-loop,stream APIand other utility classes. Note that no matter which technique we use for merging the arrays, it alwayscreate...
ArrayUtil.addAll() Method to Concatenate Two Arrays in Java The first method is ArrayUtil.addAll(). It takes the values of arrays and merges them into one. Since this method is commons of apache; hence in order to use this method, apache.commons.lang3 method needs to be imported first...
Use theArrays.deepEquals()Method to Compare Arrays in Java Example code: importjava.util.Arrays;publicclasscompareArrays{publicstaticvoidmain(String[]args){intinnerArray1[]={2,4,6};intinnerArray2[]={2,4,6};Object outerArray1[]={innerArray1};Object outerArray2[]={innerArray2};if(Arrays...
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 array int[] result = new int[arr1.length + arr2.length]; // add elements to new array int index = 0; for (int...
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. ...
crunchifyList.add("Yahoo"); // Other way to define list is - we will not use this list :) List<String>crunchifyListNew = Arrays.asList("Facebook","Paypal","Google","Yahoo"); // Simple For loop System.out.println("===> 1. Simple For loop Example."); for(inti =0; i...
Declaring an Array in Java In Java, arrays can be declared in one of two ways; the major difference between each method is that one takes up significantly more space than the other when it comes time to define its variables. Declaring an Array Example ...