[JAVA] Super Number Generator

package number;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Number extends JFrame implements ActionListener{
    JPanel jplControlPanel = new JPanel();
    JPanel jplLabelPanel = new JPanel();
    JPanel jplButtonPanel = new JPanel();
    JLabel jlbPasscode = new JLabel("Ustaw liczbe: ");
    JTextField jpwPasscode = new JTextField(5);
    JButton jbtNumber;
    StringBuilder inputPin = new StringBuilder("");
    int[] myIntArray = new int[5];

    public Number() {
        JButton[] buttons = new JButton[10];
        jpwPasscode.setText("00000");
        jplLabelPanel.setLayout(new BorderLayout());
        jplButtonPanel.setLayout(new GridLayout(2,5));

        jplLabelPanel.add(jlbPasscode, BorderLayout.CENTER);
        jplLabelPanel.add(jpwPasscode, BorderLayout.SOUTH);
        JButton resetButton = new JButton("Reset");
        resetButton.addActionListener(this);


        jplLabelPanel.add(resetButton, BorderLayout.EAST);

        for (int i = 1; i< 6; i++){

            jbtNumber = new JButton("+");
            jbtNumber.addActionListener(this);
            jplButtonPanel.add(jbtNumber);
        }

         for (int i = 1; i< 6; i++){
            jbtNumber = new JButton("-");
            jbtNumber.addActionListener(this);
            jplButtonPanel.add(jbtNumber);
        }

        jplControlPanel.setLayout(new BorderLayout());
        jplControlPanel.add(jplLabelPanel, BorderLayout.CENTER);
        jplControlPanel.add(jplButtonPanel, BorderLayout.SOUTH);


        add(jplControlPanel);

        setPreferredSize(new Dimension(300, 150));
        setVisible(true);
        pack();

    }

    @Override public void actionPerformed(ActionEvent e){

        String text = ""; // can be any value

        if(e.getActionCommand().equals("Reset")) {
            inputPin.delete(0, inputPin.length());
            jpwPasscode.setText("00000");
            System.out.println(inputPin);
        }
        inputPin.delete(0, inputPin.length());
        for (int i = 1; i< 6; ++i){
            if(e.getActionCommand().equals("+")){
                inputPin.append(i);
                jpwPasscode.setText(inputPin.toString());
                System.out.println(inputPin);
            }
        }
        inputPin.delete(0, inputPin.length());
         for (int i = 5; i> 0; --i){
            if(e.getActionCommand().equals("-")){
                inputPin.append(i);
                jpwPasscode.setText(inputPin.toString());
                System.out.println(inputPin);
            }
        }
       /*
        if(inputPin.toString().equals(text)){
            JOptionPane.showMessageDialog(null, "PIN OK!");
            System.out.print("PIN OK\n");
        }
        else {
            if(inputPin.toString().length() == 4){
                JOptionPane.showMessageDialog(null, "PIN  NIEPOPRAWNY!");
            }
            System.out.print("PIN NIE OK\n");
        }
        */
    }

    public static void main(String[] args) {
        new Number();
    }
}