requires 2 java programs, needs constants hard coded in the testing program Otherwise, the method should return fal• isEthy1Boiling. This method should return the booleanture in the is at or the of alcohol.is0xygenFreezing. true if the tem-• This method the value true if the temperatureature in the field is at or the of oxygen.• This the value true if the temperatureture stored in the teпрега-perature stored in the temperature field is at or below the freezing pointOtherwise, the method should return false.Otherwise, the method should return false.oxygen.• is0xygenBoiling. This method should return the boolean value true if the tonature stored in the temperature field is at or above the boiling pointOtherwise, the method should return false.oxygen.stored in the temperature field is at or below the freezing point of water.the method should return false.Otherwise,• iswaterBoiling. This method should return the boolean value true if the temperaturestored in the temperature field is at or above the boiling point of water. Otherwisethe method should return false.Write a program that demonstrates the class. The program should ask the user to enter atemperature, then display a list of the substances that will freeze at that temperature andthose that will boil at that temperature. For example, if the temperature is -20, the classshould report that water will freeze and oxygen will boil at that temperature.11. Mobile Service ProviderA mobile phone service provider has three different subscription packages for its customers:For $39.99 per month, 450 minutes are provided. Additional minutes are$0.45 per minute.Package A: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 thepackage the customer has purchased (A, B, or C) and the number of minutes that wereused. It should have a method that returns the total charges. Demonstrate the class in aprogram that asks the user to select a package and enter the number of minutes used. Theprogram should display the total charges.12. Mobile Service Provider, Part 2Modify the program you wrote for Programming Challenge 11 so it also calculates anddisplays the amount of money Package A customers would save if they purchased packageBor C. and the amount of money package B customers would save if they purchased pack-age 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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