Write Java code to: {***this is just code fragment (few lines of code) not complete program} (a) instantiate 2 objects of class circle one with radius 5 and one with radius 7 and color “red”: (b) instantiate one object of class Student with no parameter: (c) define and create an array called a3 with 25 elements of type int.

Java - Gift Exchange   *** Please include UML Diagram and notes in code Minimum requirements are: At least 1 loop An Array or ArrayList At least 3 Java classes  Use methods I am trying to make it so that the program will: Prompt for the number of people included in exchange - If not even it will state that there has to be an even number and ask for the number of people included again (loops). Prompt to enter a participant's first name Prompt for the participant's age Print out the random matching of participants so that everyone gets a gift and everyone gives a gift.  Please include UML Diagram

a)Develop a method called normalizeGrades() in Java following the details below: The method should accept an array of numeric grades as argument. Each grade in the array is a numeric value (of type double) between 0 to 100. b)The method should create an integer array of grades, following: If a grade in the array is greater than 50, then the method should round the numeric grade to the nearest integer value using Math.round() method, and then again round it to an integer grade to a nearest multiple of 5. If a grade in the array is less than or equal to 50, then the method should round the numeric grade to the nearest integer value using Math.round() method. c)The method should create a character array of letter grades, using a switch statement by translating the integer grades created in (b) to an array of letter grades of type character, following the grade notation: 100 or 95 or 90 85: A 70, 75, 80: B 55, 60, 65: C 50: D 0 to 49: F d)The method should print the integer array of…

python: numpy  def coupons(my_list, on_sale, prices):    '''    QUESTION 5    It's the time of week to go grocery shopping again!    Given three arrays, one of what's on sale, one of your own list, and one of the prices, return an array of the items on your list that are    on sale and more than five dollars. You have MORE coupons than you have groceries on your list- make sure to only use the coupons    that correspond to your list.     THIS MUST BE DONE IN ONE LINE    Hint: use masking and slicing     Args:        my_list(np.array)        on_sale(np.array)        prices(np.array)     Return:        np.array     >>> my_list = np.array(["eggs", "2% milk", "green onions", "whole wheat bread",                            "onions", "spinach", "peanut butter", "boxed spaghetti",                            "salt and vinegar chips", "alfredo sauce"])    >>> on_sale = np.array([True, False, True, True, True, True, False, False, False, True, False, True, False])…