java error

[Don Williams]

C:\Sun\AppServer\jdk\bin\Student.java:31: array dimension missing
Student pupil[i] = new Student[];
^
1 error

I have tried corrected but it seems that I am not setting up my array correctly.

import java.io.*;
 
// create a student class from which to create a student object which will have 5 grades
 
class Student {
 
  // array that stores 5 grades
 
  public char[] grade = new char[5];
 
} // Student
 

 
public class GradePoint
{
 
  public static void main (String [] args) throws IOException
  {
 
    // Fields
 
    int i, c;
    char letter;
 
    // create an array of 10 student objects from class Student...
 
    for (i=0; i<10; i++)
    {
 
      Student pupil[i] = new Student[];
 
      // ...get 5 grades for each student
 
      System.out.println ("\nEnter grades for Student #" + (i+1));
 
      for (c=0; c<5; c++)
      {
 
            System.out.print ("\nEnter grade #" + (c+1) + ": ");
 
            letter = System.in.read ();
 
            if ((letter == 'A') || (letter == 'B') || (letter == 'C') || (letter == 'D') || (letter == 'F'))
              pupil[i].grade[c] = letter;
 
            else
            {
      System.out.print ("Invalid grade letter."); c--;
    } // else
 
      } // for
 
    } // for
 
  } // main
 
} // GradePoint

[Ernest Friedman-Hill]

Based on your comment,

// create an array of 10 student objects from class Student...

your array declaration would look like

Student[] students = new Student[10];

Note that you want this outside your for loop, not inside; you want to create the array, then visit each element, right?

Now, this just gives you an array of 10 Student variables; the variables are all null. If you need objects, then you need to create those too; for example, inside your for loop, at the top, you might have

students[i] = new Student();

this would fill each element of the array with a Student object as you visited it.