Rilett Class Average
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import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
class Main {
public static void main(String[] args) {
//create empty arrays for data from the file
String [] studentNames = new String[10];
int [] grade = new int [10];
//create a counter for the array position
int c = 0;
// try and catch scenarios
try
{
File f = new File("studentData.txt");
Scanner s = new Scanner (f);
System.out.println("Mr. Rilett's Class Report");
System.out.println("-------------------------");
//loop through our file
while (s.hasNextLine())
{
studentNames[c] = s.nextLine();
grade[c] = Integer.parseInt(s.nextLine());
//output information to double check its correct
System.out.print("Student Name: " + studentNames[c]);
System.out.println("\t Grade: " + grade[c]);
c+=1; //move to next position
}
s.close();
}
catch (FileNotFoundException e)
{
System.out.println("No File Exists."); //message to user
e.printStackTrace(); //specific error
}
//calculate the average
calculateAverage(grade);
}
public static void calculateAverage(int [] theGradeArrayFromTheMainMethod)
{
int runningTotal=0; //add each grade to this running total
for (int i=0;i<theGradeArrayFromTheMainMethod.length;i++){
runningTotal+=theGradeArrayFromTheMainMethod[i];
}
double classAverage = (runningTotal/theGradeArrayFromTheMainMethod.length);
System.out.println("Class Average is: " + classAverage);
}
}
Java
INFO