Write a java program (class) called Grades to do the following. Must use an array. Ask the user for 20 grades. Get from the user each grade and fill an array with the grades. Find the average of the elements of the array. Print how many grades are smaller than the average. To get you started, your program code will begin as follows: import java.util.*; //includes Scanner public class Grades { public static void main(String[] args) { //begins main method

write the java program

Create a Java program that will perform the following statements.Perform the following items in a continuous manner. The code solution for the next item will be basedon the code performed on the previous item.1. Create an ArrayList named "apostles" and add the following names to it: Juan, Pedro, Lucas,Judas, Mateo, Marcos and Simon.2. Print the size of the ArrayList to the standard output before and after adding the names.3. Use two methods to print the names in standard output.a. Using For loopb. Using Iterator4. Add the name "Philip" at the end, and add the name "Thomas" between the two names "Juan"and "Pedro".5. Remove the name "Judas" using its index position.6. Search the names "Marcos", "James" and "Judas" in the ArrayList "apostles"This part will display the following:Does "apostles" contains Marcos? _______ (it will return a Boolean result)Does "apostles" contains James? _______Does "apostles" contains Judas? _______7. Sort the names of the ArrayList in alphabetical order.8....

for beginning java, here's my assignment " 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." Here is my code, " import java.util.Scanner;class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); // Start array for scores int[] scores = new int[50]; int size = 0; // Have user enter scores until...

JAVA PROGRAM Write a program that asks the user to input two integers a and b. Then create an array that has all integer from a to b. Print out the array. (Don’t forget to consider the situation of a=b, a<b, and a>b.) Example 1: Input two numbers: 6 2 Array is [6, 5, 4, 3, 2] Example 2: Input two numbers: 4 8 Array is [4, 5, 6, 7, 8] Pass the above array as a parameter to a method called average and return the average and print it out in the main method. (Do not use Math library to get the average.)