import javax.swing.JOptionPane;

public class Homeworksix {
public static void main(String[] args) {
   //getStudentLevel
   int i = getNumbers(int []);
  //displayMessage
   displayMessage();
  }

   public static int getNumbers(int i)
   {
   int numbers[] = new int[8];
   int i = 0;
    for(int i = 0; i < 8; i++)
    {
      numbers[i] = Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter your marks"));
    }
    return numbers[i];
   }

    public static void displayMessage(int i, int numbers[]){

            for (int i = 0; i < numbers.length; i++) {
            JOptionPane.showMessageDialog(null, numbers[i]);
            }
   };


}

----jGRASP exec: javac -g Homeworksix.java

Homeworksix.java:6: error: '.class' expected
   int i = getNumbers(int []);
                            ^
1 error

 ----jGRASP wedge2: exit code for process is 1.
 ----jGRASP: operation complete.