package com.mkyong.example.array; import org.apache.commons.lang3.ArrayUtils; import java.util.Arrays; public class JoinArray { public static void main(String[] args) { String[] s1 = new String[]{"a", "b", "c"}; String[] s2 = new String[]{"d", "e", "f"}; String[] result...
Here is complete code example of Apache CommonsArrayUtilsclass which makes checking for an item in array extremely easy, no matter which kind of array it is.ArrayUtilshasoverloaded methodfor all kinds of array. We willArrayUtils.contains()andArrayUtils.indexOf()method to check if Array contains a...
Collectors.joining()Concatenatesthe input Elements, separated by theDelimiterwith provided Prefix and Suffix values. Yesterday I’ve published an article onStringJoiner(), String.join()which covers five different ways to joinString,Collections, etc. In this tutorial we will go...
In Java How to Find Maximum Occurrence of Words from Text File? How to check if a file exists or not in Java? File.exists() and File.isFile() methods in Java How to Generate Random Number in Java with Some Variations? In Java how to join Arrays? 3 ways: Apache Commons Arr...
importjava.util.ArrayList;importjava.util.List;importorg.apache.commons.lang3.ArrayUtils;publicclassSimpleTesting{publicstaticvoidmain(String[]args){List<String>list=newArrayList<>();list.add("India");list.add("US");list.add("China");list.add("Russia");System.out.println(ArrayUtils.toString(lis...
importjava.util.Arrays;importorg.apache.commons.lang3.ArrayUtils;publicclassSimpleTesting{publicstaticvoidmain(String[]args){int[]Array1=newint[]{00,10,20,30,40,50};int[]Array2=newint[]{60,70,80,90,100};int[]Concate=ArrayUtils.addAll(Array1,Array2);System.out.println("Array1: "+Arra...
importjava.nio.charset.StandardCharsets; /** * @author Crunchify.com * How to Reverse a string in Java? * Version: 2.0 */ publicclassCrunchifyReverseString{ publicstaticvoidmain(String[]args){ StringtestString ="Crunchify.com Example"; ...
importjava.util.HashMap; importjava.util.Map; importjava.util.stream.Stream; importstaticjava.util.stream.Collectors.toMap; /** * @author Crunchify.com * Program: In Java how to Initialize HashMap? 7 different ways. */ publicclassCrunchifyInitiateHashMap{ ...
importorg.apache.commons.lang3.ArrayUtils;publicclassArrayIndexOf{publicstaticvoidmain(String[]args){int[]array1={1,3,5,7,9};intelementToFind=9;intindexOfElement=ArrayUtils.indexOf(array1,elementToFind);System.out.println("Index of "+elementToFind+" is "+indexOfElement);}} ...
ArrayUtils クラスには、boolean、char、String などの型の空の配列を返すための静的フィールドがいくつか用意されています。この例では、String 型の空の配列を返す EMPTY_STRING_ARRAY を使用します。出力は getEmptyArray の配列長が 0 であることを示しています。 import org.apache.commons.lang3...