package General;import java.util.Arrays;import java.util.LinkedList;import java.util.List;public class MissingNumberInTwoArraysUsingList { public static void main(String[] args){  Integer[] a = new Integer[]{1,2,3,3,4};  Integer[] b = new Integer[]{1,2,3,4};  List<Integer> listA = new LinkedList<Integer>(Arrays.asList(a));  List<Integer> listB = new LinkedList<Integer>(Arrays.asList(b));   Boolean missingNumber = false;  for(int i=0; i<listA.size(); i++){   if(i==(listA.size()-1) && missingNumber==false){    System.out.println("missing number:" + listA.get(i));   }   for(int j=0; j<listB.size();j++){    if(listA.get(i)==listB.get(j)){     listB.remove(j);     break;    }else{     System.out.println("missing number:" + listA.get(i));     missingNumber=true;    }   }   if (missingNumber==true){    break;   }  } }}