class gradeConverter {                 public static void main ( String args[] )                 {                                 …  isValidNumber (score, 0, 100);                                 … getLetterGrade (score);                                 …                 }                   private static boolean isValidNumber ( int number, int minimum, int maximum )                 {                                 …                 }                   private static String getLetterGrade ( int score )                 {                                 …                 } }     PART 2 class gradeConverterPublic {                 public static boolean isValidNumber ( int number, int minimum, int maximum )                 {                                 …                 }                   public static String getLetterGrade ( int score )                 {                                 …                 } }     class gradeConverterDemo {                 public static void main ( String args[] )                 {                                 …  gradeConverterPublic.isValidNumber (score, 0, 100);                                 …  gradeConverterPublic.getLetterGrade (score);                                 …                 } }

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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Question

please i need help writing this program and im completly stuck it i dont kno whow to right it at all. it has three parts each need done seperatly but the three classes need to be able to work together (the gradeConverter, the gradeConverterPublic, gradeConverterDemo). the classes have to be done the way my professor wants it done. the  professor didnt really say much about getLaterGrade method, im guessing he wants us to it with a being a range between 90 and 100, b range between 80 and 89, c being between 70 and 79, d being bewteem 60 and 69, f being from 0 to 59. the gradeConverterDemo class just tests all the stuff that was coded in the program so it needs to be able to call those previous classes, run and test them with what was givin toi the program by user input 

it needs to be done like this

class gradeConverter

{

                public static void main ( String args[] )

                {

                                …  isValidNumber (score, 0, 100);

                                … getLetterGrade (score);

                                …

                }

 

                private static boolean isValidNumber ( int number, int minimum, int maximum )

                {

                                …

                }

 

                private static String getLetterGrade ( int score )

                {

                                …

                }

}

 

 

PART 2

class gradeConverterPublic

{

                public static boolean isValidNumber ( int number, int minimum, int maximum )

                {

                                …

                }

 

                public static String getLetterGrade ( int score )

                {

                                …

                }

}

 

 

class gradeConverterDemo

{

                public static void main ( String args[] )

                {

                                …  gradeConverterPublic.isValidNumber (score, 0, 100);

                                …  gradeConverterPublic.getLetterGrade (score);

                                …

                }

}

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