First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects) Then create a new Java application called "Scorer" (without the quotation marks) that declares a two- dimensional array of doubles (call it scores) with three rows and three columns and that uses methods and loops as follows. Use a method containing a nested while loop to get the nine (3 x 3) doubles from the user at the command line. Use a method containing a nested for loop to compute the average of the doubles in each row. Use a method to output these three row averages to the command line.
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- First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects).Then create a new Java application called "MinMax" (without the quotation marks) that declares an array of doubles of length 5, and uses methods to populate the array with user input from the command line and to print out the max (highest) and min (lowest) values in the array.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…Implement a class named Parade using an ArrayList, which will manage instances of class Clown. Each Clown only needs to be identified by a String for their name. Always join a new Clown to the end of the Parade. Only the Clown at the head of the Parade (i.e., the first one) can leave the Parade. In addition, also write a method called isFront that takes a Clown as parameter and returns true if the passed clown is at the front of the parade otherwise returns false. Create a test application to demonstrate building a parade of three or four clowns and include your own name. Then, remove one or two, and add another one or two. Also, test the isFront method by passing different clowns to the method.
- 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 main method, in which you should have an Arralylist of students, in which you should include every student. You should have a PhD student named Joe Smith. In addition, you should create an Undergraduate student object for each of your team members (setting their names). If you’re only one person doing the assignment, then you should just create one undergraduate object. For each undergraduate student, you should add add two courses (COIS 2240 and COIS 1020). Loop over the arraylist of students, print their names, if the student is an undergraduate student, print their courses.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.
- First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects).Then create a new Java application called "Scorer" (without the quotation marks) that declares a two-dimensional array of doubles (call it scores) with three rows and three columns and that uses methods and loops as follows.Use a method containing a nested while loop to get the nine (3 x 3) doubles from the user at the command line.Use a method containing a nested for loop to compute the average of the doubles in each row.Use a method to output these three row averages to the command line.Write a class ArrayMethods, where the main method asks the user to enter thenumber of inputs and stores them in an array called myList. Create a methodprintArray that prints the array myList. Create another method copyArray that copiesthe array using System.arraycopy, and multiplies each element in the copied array by2, then finally returns the array to the main method. Invoke the printArray again toprint the array returned by copyArray. In summary, see below. (!5 points)• main method does: asks user for inputs and stores in array. Invoke printArray. Invoke copyArray.Invoke printArray again.• printArray: void method, parameters passed is an array, prints an array• copyArray: array-returning method, parameters passed is an array, copies array, multiplies 2 to eachelement in the copied array, returns the copied arraySample RunEnter the number of items: 4Enter the numbers: 2 3 4 6Your printed array: 2 3 4 6Your copied printed array: 4 6 8 122. Write a class ArrayClass, where the main…Fancy Integer ArrayList (ONLY NEED HELP WITH WRITING TEST CASES) For example, we have defined a “testRemoveInt” method for you (see below) which tests the “remove” method. Pass the tests provided then write additional tests where it says “// TODO”. You’ll do this for each unit test method in the program. import static org.junit.jupiter.api.Assertions.*; import java.util.ArrayList; import org.junit.jupiter.api.Test; class CustomIntegerArrayListTest { @Test void testSpliceIntInt() { CustomIntegerArrayList arr1 = new CustomIntegerArrayList(); arr1.add(2); arr1.add(3); arr1.add(4); arr1.add(5); arr1.add(6); arr1.splice(3, 2); ArrayList<Integer> lst1 = new ArrayList<Integer>(); lst1.add(2); lst1.add(3); lst1.add(4); assertEquals((int) lst1.get(0), (int) arr1.get(0)); assertEquals((int) lst1.get(1), (int) arr1.get(1)); assertEquals((int)…
- Create a new Java project/class on BlueJ(if possible, otherwise any IDE will work) called "ChangeUp" 1. Create an empty int array of size 6. 2. Create a method called populateArray that will pass an array, use random class to choose a random index and prompt the user to enter a value, store the value in the array. ***Note: Generate 6 random index numbers in an attempt to fill the array*** 3. Create a method called printArray that prints the contents of the array using the for each enhanced loop. Submit code. **It is possible that your array won't be filled and some values will still have 0 stored. That is acceptable. **When you add a contact to your phone, it automatically sorts those names alphabetically. In this exercise, we are going to create a phonebook that automatically sorts everytime a new number is added to the phonebook. A PhoneNumber class has been created already that has the instance variables name and number. Your job is to create the PhoneBook class that will store an ArrayList of PhoneNumbers. The PhoneBook class does not have a constructor - it only contains an ArrayList that can store the individual phone numbers that are added to it. There should be three methods in the PhoneBook class: addNumber- This method takes a PhoneNumber and adds it to the directory. Once the number has been added, the sort method is called on the directory to sort that new address into the phone book. sort- This method sorts the directory in alphabetical order A-Z.a. Remember that in order to compare Strings, we can use the compareTo() method. This returns an integer that indicates whether a String’s…Implement the ShoppingCart and Product class with necessary properties so that the given output is produced. Do not change any given code.s1 = ShoppingCart()p1 = Product("Razer BlackShark","Headset",99.99,5)p2 = Product.createProduct("Razer Huntsman","Keyboard",249.99,12)print("1.====================================")s1.addGadget(p1,p2)print("2.====================================")s1.setCartName("Amazon")s1.addGadget(p1,p2)s1.addGadget(Product("HyperX Fury","Mousepad",26.99,21))print("3.====================================")print("Total Products created:",Product.totalProducts)print("4.====================================")s1.printCartDetails()print("5.====================================")s1.removeFromCart("Logitech G ProX Superlight")print("6.====================================")s1.removeFromCart("Razer Huntsman")print("7.====================================")s1.printCartDetails()Output:1.====================================Please set the cart name…