java - int [] cannot be converted to int

Question

I want to use a 2D array for a gradebook method, where it has the student names, then the exam scores. In the class I have as follows.

private int numberOfStudents;    
private String [] studentName;
private int  examNumber;
private int [] examScores;
private int [][] gradebook;

public ExamAverage ()
{
numberOfStudents = 0;
studentName = new String[numberOfStudents];
examNumber = 0;
examScores = new int [numberOfStudents]; 
gradebook = new int [numberOfStudents][examScores];

Yet I get an error int[] cannot be converted to int.

Answer 1

You have:

gradebook = new int [numberOfStudents][examScores];

But examScores is an int[]. Array dimensions have to be an int, so examScores cannot be used as an array dimension (I can understand your confusion about the error, given how literal it is: it wants an int but you gave it an int[]).

Judging by your description I'm guessing you mean something more along the lines of:

gradebook = new int [numberOfStudents][numberOfExams];

Where numberOfExams is an int you'll need, containing the count of exams. Just a guess, though.