Write a JAVA program which consists of a single class called Calculator. This program will display a menu with the following options: (1) add, (2) subtract, (3) multiply, (4) divide (5) mod, and (6) do nothing. If the user enters something else, the program should display an error message. Otherwise, it should ask the user for two numbers.

JAVA PROGRAM

Create a Java program that can be used to calculate the average weekly and monthly grocery bill for a family of four: Prompt the user for the coupon amount as a decimal (example, .10). Ensure the value is set to 10% if the value exceeds 100% or is less than or equal to zero. Prompt the user for 2-4 weeks of grocery bills. Calculate the monthly and weekly average for groceries. Display monthly total and weekly average without the coupon. Display monthly total and weekly average with the coupon.

CSCI 140/L Java Project: Menu-Driven System Part A Write a menu-driven program that will give the user the three choices: 1) Wage calculator, 2) Coupon Calculator, and 3) Exit. Class Name: PartA Wage Calculator: For the wage calculator, prompt for the name and hourly pay rate of an employee. Here the hourly pay rate is a floating-point number, such as $9.25. Then ask how many hours the employee worked in the past week. Be sure to accept fractional hours. Compute the pay. Any overtime work (over 40 hours per week) is paid at 150 percent of the regular wage (1.5 the hourly pay rate). Print the employee's name, regular hours worked, regular hours pay, overtime hours worked (do not show overtime hours, if there are none), overtime hours pay (do not show overtime pay if there is none), and total pay. [Do not prompt for overtime hours] Coupon Calculator: For the coupon calculator, the total coupon amount is calculated based on the type of items purchased. Ask for the shopper's total purchase…