Need help for array

Question

it said this is not a statement,
and i cannot access keys[j] as well.
any help would be great thank you~
char[] = keys;
package arry;
import javax.swing.JOptionPane;
* @author chris
public class Main {
     * @param args the command line arguments
    public static void main(String[] args) {
        char[][] answers = {
            {'A' , 'B', 'A', 'C', 'C', 'D', 'E', 'A', 'D' , 'D' },
            {'D' , 'B', 'A', 'B', 'C', 'A', 'A', 'E', 'A', 'D'}
        //char[] keys = {'D' , 'B' , 'D' , 'C', 'C', 'D', 'A', 'E', 'A', 'D'};
        char[] = keys;
        for(int k = 0; k < 10; k++)
            String answerschar = JOptionPane.showInputDialog("Enter the Grade");
            //char[] keys = answerschar.toCharArray();
            keys[k] = answerschar.charAt(0);
        for(int i=0; i< answers.length; i++)
            int correctcount = 0;
            for(int j=0 ; j < answers.length; j++)
if(answers[i][j] == keys[j])
correctcount++;
System.out.println("Student " + i + " s' correct answer is " + correctcount);

Answer 1

flounder ur tips are always helpful..i figure it out now
the code should be like this : )
char[] keys =  new char[10];
        for(int k = 0; k < keys.length ; k++)
            String answerschar = JOptionPane.showInputDialog("Enter the Grade");
            //char[] keys = answerschar.toCharArray();
            keys[k] = answerschar.charAt(0);
        }