Write a java class method named countDigits that returns the number of digits in it's parameter, which is of type int.
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Write a java class method named countDigits that returns the number of digits in it's parameter, which is of type int.
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- Using Java, Write a method named isEven that accepts an int argument. The method should return true if the argument is even, or false otherwise. Also write a program to test your method.Write a java 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.Write a method that returns a random number from alist of numbers passed in the argument. The method header is specified as follows:public static int getRandom(int... numbers)
- In this exercise, you have to implement a calculator which can perform addition, subtraction, multiplication, and division. Problem Statement# Write a Java class called Calculator with ● private fields: ○ num1 and num2 (double type) And methods: ● add(), a method which returns the addition of two numbers ● subtract(), a method which returns the subtraction of num1 from num2 ● multiply(), a method which returns the multiplication of numbers ● divide(), a method which returns the division of num2 by num1 ● Define a parameterized constructor which takes two parameters num1 and num2 and assigns these variables to the respective fields in the class. Input# Pass double point numbers in the parameterized constructor Output# addition, subtraction, division, and multiplication Sample Input# Calculator obj = new Calculator(10, 94); obj.add() obj.subtract() obj.multiply() obj.divide() Sample Output# 104 84 940 9.4 Part of the Solution class Calculator { // write class fields here public…Java write a method that is called isEqual that takes two double values as parameters and returns true if they are essentially equal, meaning they are within 0.00001 of each other.Write a program that reads a student’s name together with his or her test scores. The program should thencompute the average test score for each student and assign the appropriate grade. The grade scale is asfollows:90-100, A; 80-89, B; 70-79, C; 60-69, D; 0-59, FYour program must use the following methods:(a) A value-returning method, calculateAverage, to determine and return the average of fivetest scores for each student. Use a loop to read and sum the five test scores. (This method doesnot output the average test score. That task must be done in the method main.)(b) A value-returning method, calculateGrade, to determine and return each student’sgrade. (This method does not output the grade. That task must be done in the method main.)Test your program on the following data. Read the data from a file and send the output to a file. Do notuse any global variables. Use the appropriate parameters to pass values in and out of methods.Johnson 85 83 77 91 76Aniston 80 90 95 93 48Cooper 78…
- All coding is done in Java, using IntelliJ Idea. 3. Charge Account Validation Create a class with a method that accepts a charge account number as its argument. The method should determine whether the number is valid by comparing it to the following list of valid charge account numbers: 5658845 4520125 7895122 8777541 8451277 1302850 8080152 4562555 5552012 5050552 7825877 1250255 1005231 6545231 3852085 7576651 7881200 4581002 These numbers snould be stored in an array or an ArrayList Object. Prompt the user to choose search methodology between sequential/linear search, and binary search before the search is performed. Have the search locate the number passed as an argument. If the number is in the array, the method should return true, indicating the number is valid. If the number is not…In Java Write a RainFall class that stores the total rainfall for each of 12 months into anarray of doubles. The program should have methods that return the following: Total rainfall for the year, The average monthly rainfall The month with the most rain The month with the least rainThe program should not accept negative numbers for monthly rainfall figures.You may use the following main function to test the methods:public static void main(String[] args) { // Array with this year's rainfall data double[] thisYear = {1.6, 2.1, 1.7, 3.5, 2.6, 3.7, 3.9, 2.6, 2.9, 4.3, 2.4, 3.7 }; int high; // To hold the month with the highest amount int low; // To hold the month with the lowest amount // Display the total rainfall. System.out.println("The total rainfall for this year is " + getTotalRainFall(thisYear)); // Display the average rainfall. System.out.println("The average rainfall for this year is " + getAverageRainFall(thisYear)); // Get and display the month with the highest rainfall.…write a program in java A prime number is a number that is evenly divisible only by itself and 1. For example, thenumber 5 is prime because it can be evenly divided only by 1 and 5. The number 6, however,is not prime because it can be divided evenly by 1, 2, 3, and 6.Write a method named isPrime, which takes an integer as an argument and returns true ifthe argument is a prime number, or false otherwise. Demonstrate the method in a completeprogram.
- USING JAVA Write a method intToWeekDay(integer) that returns a week day if integer is belongs to {0,1,...,6} by using enumeration type. For example, calling intToWeekDay(0) returns "Sunday".1- Write a java program as follows: a- Write a method called isEven that takes an integer as parameter. The method should return true if the integer is even or false otherwise. b- Write a method called powOfTwo that takes an integer as parameter, computes, and outputs it's square (power of 2). c- In the main method, write a program that invokes the previously created methods to display the power of 2 of all the even numbers between 1 and a maximum number entered by the user. Your program should print a maximum of 5 results per line as shown in the below sample run. Sample run: Enter a number 50 4 16 36 64 100 144 196 256 324 400 484 576 676 784 900 1024 1156 1296 1444 1600 1764 1936 2116 2304 2500write code in java write a static method that will take in a lone integer parameter. this function will return 1 if the number provided is odd, 0 if it is even. write a line of code that will call the function you just wrote above, passing it the contents of a variable called value and have it assigned the value returned by the function another variable called answer(both variables are already declared.)