requires 2 java programs, needs constants hard coded in the testing program **Mobile Service Provider**A mobile phone service provider has three different subscription packages for its customers:- **Package A:** For $39.99 per month, 450 minutes are provided. Additional minutes are $0.45 per minute.- **Package B:** For $59.99 per month, 900 minutes are provided. Additional minutes are $0.40 per minute.- **Package C:** For $69.99 per month, unlimited minutes are provided.---**Oxygen Boiling and Freezing Points**Write a program that lists the following methods for the class:- **isOxygenBoiling:** The method should return the boolean value true if the temperature field is at or above the boiling point of oxygen.- **isOxygenFreezing:** The method should return the boolean value true if the temperature field is at or below the freezing point of oxygen.- **isWaterBoiling:** The method should return the boolean value true if the temperature field is at or above the boiling point of water.- **isWaterFreezing:** The method should return the boolean value true if the temperature field is at or below the freezing point of water.The class should have a method that returns the total charges. Demonstrate the class in a program that asks the user to enter the number of minutes used. The program should store the letter of the package the customer has. It should display the total charges and should have a method that checks for the package offering the least cost for the customer's usage.---**Mobile Service Provider, Part 2**Modify the program for Programming Challenge 1 so it also calculates and displays the amount of money package customers would have saved if they purchased Package B or C, and the amount of money package customers would save if they purchased Package C. If there would be no savings, no message should be printed.

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11. Mobile Service Provider A mobile phone service provider has three different subscription packages for its customers: month, 450 minutes are provided. Additional minutes are For $39.99 $0.45 per minute. Package A: per For $59.99 per month, 900 minutes are provided. Additional minutes are $0.40 per minute. Package B: Package C: For $69.99 per month, unlimited minutes are provided. Design a class that calculates a customer's monthly bill. It should store the letter of the package the customer has purchased (A, B, or C) and the number of minutes that were used. It should have a method that returns the total charges. Demonstrate the class in a that asks the user to select a package and enter the number of minutes used. The program program should display the total charges.

11. Mobile Service Provider A mobile phone service provider has three different subscription packages for its customers: month, 450 minutes are provided. Additional minutes are For $39.99 $0.45 per minute. Package A: per For $59.99 per month, 900 minutes are provided. Additional minutes are $0.40 per minute. Package B: Package C: For $69.99 per month, unlimited minutes are provided. Design a class that calculates a customer's monthly bill. It should store the letter of the package the customer has purchased (A, B, or C) and the number of minutes that were used. It should have a method that returns the total charges. Demonstrate the class in a that asks the user to select a package and enter the number of minutes used. The program program should display the total charges.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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