File class and array in java

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I am stuck when writing a java program, I have to calculate the grade of 121 students and store in an array for later use. But the array I created does not have the values from the for loop. Please help me. This is what I got now. Thank you. public class GradeCalculator{

public static void main(String[] args){
    File grade = fileName();
    int lines = getNumEntries(grade);
    print(grade, lines);
}
public static File fileName(){
    Scanner scan = new Scanner(System.in);
    System.out.println("Enter the name of the grade file");
    String fileName = scan.nextLine();
    File file = new File(fileName);
    while(!file.exists()){
        System.out.println("your input file does not exist");
        fileName = scan.nextLine();
        file = new File(fileName);
    }return file;       
}

public static int getNumEntries(File fln){
    File file = fln;
    int count = 0;
    try{
        Scanner input = new Scanner (fln);
        while(input.hasNextLine()){
            count++;
            input.nextLine();
        }
    }catch(FileNotFoundException e) {
        System.out.println("File not found");
        System.exit(0);
    }return count;  
}

public static void print(File fln, int values)throws NoSuchElementException{
    File file = fln;
    int []a = new int [values];
    try{
        Scanner input = new Scanner(file);
        for(int i=0; i<=a.length; i++){
            while(input.hasNextDouble()){
                double Lab = input.nextDouble();
                double A1 = input.nextDouble()/10*4;
                double A2 = input.nextDouble()/10*4;
                double A3 = input.nextDouble()/10*4;
                double A4 = input.nextDouble()/10*4;
                double A5 = input.nextDouble()/10*4;
                double A6 = input.nextDouble()/10*4;
                double A7 = input.nextDouble()/10*4;
                double Midterm1 = input.nextDouble()/20*15;
                double Midterm2 = input.nextDouble()/35*15;
                double Final = input.nextDouble()/110*37;
                a[i]= (int)(Lab+A1+A2+A3+A4+A5+A6+A7+Midterm1+Midterm2+Final);
                System.out.println(a[i]); //If I put the println here the values are correct
            }
        }
    }catch(FileNotFoundException e){
        System.out.println("File not found");
    }System.out.println(a[i]); //If I put the println here the values are different
}

asked 1 min ago

Cody Lee

1

File class and array in java