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- In java Write a class with a main() method. The main() method should declare and initialize four different ArrayLists, each containing at least four int values. The class should also contain a method named fiveEight. Given an ArrayList of ints, the fiveEight should return the int 30 if every element of the given ArrayList is either a 5 or a 8; otherwise, it should return -9. There should be four calls to the allfiveEight method in the main() method.Computer Science create a method +addToList(o:E):void that adds the object (o) to the ArrayList referenced by the instance variable list. create a method +removeFromBackOfList():E that removes the object at the back of the ArrayList and returns it.2. Write a class ArrayClass, where the main method asks the user to enter the four num bers. Create a method printArray that prints the array whenever required (use Acrav.toString method). Make the program run as shown in the Sample Run below. Green is user input. Use Attax.sort, Attach.bianrySearch. Attaveauals Sample Run List1, Enter four num bers: 2 33 2 List2, Enter four num bers: 6 25 4 List3, Enter four num bers: 52 46 Your original Listi: [2, 3, 3, 2] Your original List2: [6, 2, 5, 4] Your original List3: [5, 2, 4, 6] Sorted Listi is: [2, 2, 3, 3] Enter a number from the sorted List1 to search for: 3 Value 3 is in index 2 (or position 3) List that are the same when sorted: [2, 4, 5, 6]
- JAVA LANGUAGE Create an ArrayList, Name it YourRegNoandName that can hold Integers, and fill each slot with a different random value from 1-50. Display those values on the screen, and then prompt the user for an integer to search through the ArrayList, and if the item is present, say “FOUND”. It is not necessary to display anything if the value was not found. If the item is in the ArrayList multiple times, it's okay if the program prints the message more than once. ALSO SCREENSHOT THE OUTPUTIn java language Create a class name FunWithArrays and create the following methods: consecutiveValueChecker(int arr[]): This method will not allow user to input consecutive values in an array Input: 3,4,2,1,5,5 Output: Cannot input consecutive value please input value other than 5 calcultesLongestSequence(String arr[]): This method will take a string array and calculate length of values at each index also print the word having the longest length.getListRowIndices Method public static java.util.ArrayList<java.lang.Integer> getListRowIndices(int[][] array, int rowLength) This method returns an ArrayList with the indices of rows of the two-dimensional having a length that corresponds to rowLength. You may only use one auxiliary method. The method should create an ArrayList that is passed to the auxiliary in order to place the indices (if any). If no indices are found, an empty (size of 0) ArrayList will be returned. You can assume the array parameter will not be null and every row of the two-dimensional array has an array with a size of at least 0. Your implementation must be recursive and you may not use any loop construct. Do not use ++ or -- in any recursive call argument. It may lead to an infinite recursion. For example, use index + 1, instead of index++. Parameters: array - rowLength - Returns: ArrayList<Integer>
- Problem #3. Design an ArrayList that asks the user to input 10 numbers. Get the sum of evennumbers, odd numbers, positive numbers, and negative numbers.Class Name: ArrayListSumPostitiveNegativeNumbersSample Input/Output:Enter the 10 values of the ArrayList12345-1-2-3-4-5The sum of even numbers is: 0The sum of odd numbers is:0The sum of positive numbers is:15The sum of negative numbers is:-15 Machine Problem #4. Design an ArrayList that asks the user to input 15 numbers. Get the highest and smallestvalueClass Name: ArrayListBiggestSmallestSample Input/Output:Enter the values of the 3-D array:123456789101112131415The highest value is: 15The smallest value is: 1 use java languageWrite the following method that returns themaximum value in an ArrayList of integers. The method returns null if thelist is null or the list size is 0.public static Integer max(ArrayList<Integer> list)Write a test program that prompts the user to enter a sequence of numbers endingwith 0 and invokes this method to return the largest number in the input.public static ArrayList findExactString(String s, ArrayList myArray) { return null; } // Use the above method, findExactString, as a helper method to implement addWithoutDuplication method. The addWithoutDuplication method has the following properties: 1- It takes two arguments, a string s and an ArrayList myArray of type string. 2- It returns an integer which represents the number of occurrences of the string s in myArray while attempting to add it. 3- If myArray is null, it returns -1 4- If adds the string s to the end of the ArrayList myArray if the string s is not already there. public static int addwithout Duplication(String s, ArrayList myArray) { return -1;
- java Create a static method that: is called appendPosSum returns an ArrayList of Integers takes one parameter: an ArrayList of Integers This method should: Create a new ArrayList of Integers Add only the positive Integers to the new ArrayList Sum the positive Integers in the new ArrayList and add the Sum as the last element For example, if the incoming ArrayList contains the Integers (4,-6,3,-8,0,4,3), the ArrayList that gets returned should be (4,3,4,3,14), with 14 being the sum of (4,3,4,3). The original ArrayList should remain unchanged. 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(appendPosSum(list));For Beginners Java: Write a program that ask the user to enter a list of positive scores until the user enters a negative score to terminate the input. You need to store these scores in an array. You can assume the maximum number of scores the user may enter is 50. However, you need to keep track of the actual number of scores entered. Write 2 methods: 1. calculateAverage(): this method takes the list of scores and return the average score. 2. countPerfectScores(): this method takes the list of scores and return the number of perfect scores (100). The main program reads the input and calls these methods and print the results. Please make sure you write a comment line to document what your method does.Write a java application which initializes an array with ten random integers between 1 and 6. Write two methods: 1. arraySwap: this method should accept an integer array and swap the first and the last item. 2. findMinimum: this method should accept the array and return the minimum value of that array You should comment and follow javaDoc for both methods. Your main method should test each of these methods.