Write a class ArrayMethods, where the main method asks the user to enter the number of inputs and stores them in an array called myList. Create a method printArray that prints the array myList. Create another method copyArray that copies the array using System.arraycopy, and multiplies each element in the copied array by 2, then finally returns the array to the main method. Invoke the printArray again to print the array returned by copyArray.

Java this piece of my code is not working .....I am trying to add Warship with a type or warship , but I keep getting an error ? //add another WarShip instance to the ArrayList. //use a foreach loop to process the ArrayList and print the data for each ship. //count the number of ships that are not afloat. Return this count to main for printing. //In the shipShow method: the number of ships that are still a Float public static int shipShow(ArrayList<Ship> fleetList) { //from the ArrayList, remove the CargoShip that was declared as type Ship. fleetList.remove(2); //Removing ElFaro form the list // review Type casting instanceof | up casting Ship < Warship , subclass is a object of its parents //add warship USS John Warner - add cast by (Ship) new WarShip Ship warship2 = (Ship) new WarShip("USS John Warner", 2015, true, "attack submarine", "United States");   fleetList.add(warship2);   int count= 0; //use a foreach loop to process the ArrayList and print the data for each ship.…

Write a class method named countOccurences that returns the number of times a particular integer occurs in an array of integers. The integer and the array will both be parameters.

Based on the information in the screenshots, please answer the following question below. The language used is Java and please provide the code for it with the explanation. Create a testing class named “PlanTest”. Under this class, there needs to be another static method besides the main method: You will need to create a static method named “prerequisiteGenerator” under “PlanTest”, which return a random 2D array containing prerequisite pairs (e.g., {{1, 3}, {2, 3}, {4, 2}}). The value range of a random integer is [0, 10] (inclusive). This method will accept an integer parameter, which specifies the length of the returned array: int[][] pre = prerequisiteGenerator(3); // possibly {{1, 3}, {2, 3}, {4, 2}} Under the main method, you will need to use prerequisiteGenerator to generate random prerequisite pair lists, and perform tests on plan method at least three examples by printing proper messages. Given 4 courses and prerequisites as [[1,0], [2,0], [3,1]] It is possible to take all…