sample edit view in java multi-array wtih JOptionPane

multi_array_joptionpane.java

 public static void main(String[] args) {

        final int maximum_users = 2, maximum_columns = 4;
        final int name_index = 0, address_index = 1, age_index = 2, contact_index = 3;
        final String name_label = "Name: ", address_label = "Address: ", age_label = "Age: ", contact_label = "Contact: ";
        final String enter_label = "Enter ";

        String student_array[][] = new String[maximum_users][maximum_columns];

        for (int i = 0; i < maximum_users; i++) {
            student_array[i][name_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + name_label);
            student_array[i][address_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + address_label);
            student_array[i][age_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + age_label);
            student_array[i][contact_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + contact_label);

            System.out.println((i + 1) + " done.");
        }

        boolean loop = true;
        do {

            System.out.println("List of Students:");

            for (int i = 0; i < maximum_users; i++) {

                System.out.println((i + 1) + ". " + name_label + student_array[i][name_index] + " "
                        + address_label + student_array[i][address_index] + " "
                        + age_label + student_array[i][age_index] + " "
                        + contact_label + student_array[i][contact_index]);
            }

            String option_or_search = JOptionPane.showInputDialog("1:enter to search then edit\n"
                    + "2:exit");

            if (option_or_search.equalsIgnoreCase("2")) {
                loop = false;
                System.out.println("Will exit..");
            } else {
                for (int i = 0; i < maximum_users; i++) {
                    if (option_or_search.equalsIgnoreCase(student_array[i][name_index])
                            || option_or_search.equalsIgnoreCase(student_array[i][address_index])
                            || option_or_search.equalsIgnoreCase(student_array[i][age_index])
                            || option_or_search.equalsIgnoreCase(student_array[i][contact_index])) {
                        student_array[i][name_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + name_label);
                        student_array[i][address_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + address_label);
                        student_array[i][age_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + age_label);
                        student_array[i][contact_index] = JOptionPane.showInputDialog((i + 1) + ". " + enter_label + contact_label);
                        break;
                    }
                }

            }

        } while (loop);
    }