Project 4-2: Use a class to store grade data Console Helcome to the Letter Grade Converter Enter numerical grade: 93 Letter grade: A continue? {yin}: y Enter numerical grade: 38 Letter grade: A continue? {yin}: y Enter numerical grade: 36 Letter grade: 3 continue? {yin}: y Enter numerical grade: 5? Letter grade: B continue? {yin}: y Enter numerical grade: 59 Let ter grade: F Icontinue? {yin}: n l Operation 1' The user enters a number grade from {i to l. ' The application displays the corresponding letter grade. ' The application prompts the user to continue. Specications 1' This application should use a class named Grade to store the data for each grade. This class should include these three methods: void setumher{int number} int getumher{} String getLetter{} *- The grading criteria is as inows: 33133 833? ??9 EliE? :56 'l'lh 1' Assume that the user will enter Tvalid integers for the grades. i The application should continue onlyr if the user enters \"y\" or 'T\" to continue