n java Write a method public static ArrayList append(ArrayList a, ArrayList b) that appends one array list after another. Ex: a = 1 2 3 4 5, b = 6 7 8 9 10 then append returns 1 2 3 4 5 6 7 8 9 10

JAVA programming language i need to create an "addFront" method in the bottom of the code that adds an element at the front. [-1, -3, -5]  A.add(-9) ===> [-9, -1, -3, -5]. Its all the way in the bottom, please help me. public class ourArray  { //define an array of integers private int[] Ar; //Ar is a reference  //declare  private int capacity = 100; private int size = 0; private int increment = 10;   //default constructor   public ourArray() { Ar = new int[100]; capacity = 100; size = 0; increment = 10;   } //Constructor that accepts the capacity (C). It creates an array of C integersm, sets capacity to C //  Increment to 10 public ourArray(int C) { Ar = new int [C]; size = 0; capacity = C; increment = 10; } //Constructor that accepts two integers (c, i) c for capacity and i for increment public ourArray (int C, int I) { Ar = new int[C]; size = 0; capacity = C; increment = I;   }   //setter for Increment public void setincrement(int I) { increment = I; } //getter for size, capacity…

in java programming answer the following: Given an array called myArr (created as ArrayList<T>) and contains the {1,2,3,4,5,6,7}. (a) what would be the contents of this array after myArr.add(10). b) write the content of myArr after myArr.add(4, 11);

Given an array of numbers, and an integer, find the last index that    that integer appears in the array. If the number is not    found, return -1.   import java.util.ArrayList;public class LastIndexFound{public static int solution(ArrayList<Integer> nums, int numToFind){// ↓↓↓↓ your code goes here ↓↓↓↓return 0;}}

In java Write a method public static ArrayList<Integer> merge(ArrayList<Integer> a, ArrayList<Integer> b) that merges one array list with another. Ex: a = 1 2 3 4 5, b = 6 7 8 9 10 then merge returns 1 6 2 7 3 8 4 9 5 10

How do you do this? JAVA

Write the following method that returns the sum of all numbersin an ArrayList:public static double sum(ArrayList<Double> list)Write a test program that prompts the user to enter five numbers, stores them inan array list, and displays their sum.

java Create a static method that: is called repeatAll returns ArrayList of Booleans takes in a single parameter - an ArrayList of Booleans This method should modify its ArrayList parameter by repeating its ArrayList values. For example, if the parameter is   (true, false, false) The modified ArrayList should be   (true, false, false, true, false, false)    public static void main(String[] args) {    Scanner in = new Scanner(System.in);    int size = in.nextInt();    ArrayList<Boolean> list = new ArrayList<>();    for(int i=0; i < size; i++) {      list.add(in.nextBoolean());    }     System.out.println(repeatAll(list));   }  }

java Create a method that: is called timesTwo returns an ArrayList of Integers takes in a single parameter - an ArrayList of Integers called nums This method should take the ArrayList parameter and multiply every value by two.   public static void main(String[] args) {    Scanner in = new Scanner(System.in);    int size = in.nextInt();    ArrayList<Integer> list = new ArrayList<>();    for(int i=0; i < size; i++) {      list.add(in.nextInt());    }     System.out.println(timesTwo(list));   }  }

Write a public static method named allLessThanMean that will take an ArrayList<Integer> as an argument. This method will return an ArrayList<Integer>. When called and passed anArrayList, this method will return an ArrayList containing all the elements in the argument ArrayList that are less than the average of all the values in the argument ArrayList. The values in the returned ArrayList must be in the same order as they are in the argument ArrayList. Here are some examples: Example 1 Given: ArrayList<Integer> myList = new ArrayList<Integer>(); with these values {1, 2, 3, 4, 5}; allLessThanMean(myList) should return an ArrayList<Integer> with these values {1, 2} Example 2 Given: ArrayList<Integer> myList = new ArrayList<Integer>(); with these values {3, 7, 6, 2, 9, 0, 4, 8}; allLessThanMean(myList) should return an ArrayList<Integer> with these values {3, 2, 0, 4} Example 3 Given: ArrayList<Integer> myList = new…