Answered: Write an application that displays a…

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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Write an application that displays a series of at least eight student ID numbers (that you have stored in an array) and asks the user to enter a test letter grade for the student.

Create an Exception class named GradeException that contains a static public array of valid grade letters (A, B, C, D, F, and I) that you can use to determine whether a grade entered from the application is valid. In your application, throw a GradeException if the user does not enter a valid letter grade. Catch the GradeException, and then display the message Invalid grade. In addition, store an I (for Incomplete) for any student for whom an exception is caught. At the end of the application, display all the student IDs and grades.

import java.util.*;

public class TestGrade {

public static void main(String args[]) throws Exception {

Scanner input = new Scanner(System.in);

int[] ids = {1234, 1245, 1267, 1278, 2345,

1256, 3456, 3478, 4567, 5678

};

char[] grades = new char[10];

String gradeString = new String();

final int HIGHLIMIT = 100;

String inString, outString = "";

int flag = 0;

for (int x = 0; x < ids.length; ++x) {

System.out.println("Enter letter grade for student id number: " + ids[x]);

inString = input.next();

grades[x] = inString.charAt(0);

// Write your code here

}

for (int x = 0; x < ids.length; ++x)

outString = outString + "ID #" + ids[x] + " Grade " +

grades[x] + "\n";

System.out.println(outString);

}

--------and second file...--------

public class GradeException extends Exception {

public GradeException(String string) {

}

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