package alex.lesson5;

import javax.swing.*;
import java.awt.*;
import java.util.ArrayList;

public class Main {

    public static String[] functions = {
            "+", "-", "*", "/",
            "a", "b", "c", "d",
            "e", "f", "g", " "
    };
    public static String[] digits = {
            "1", "2", "3", "4",
            "5", "6", "7", "8",
            "9", "0", ".", " "
    };

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.setBounds(100, 100, 385, 240);
        frame.setLayout(null);

       // ArrayList<JButton> digits = new ArrayList<JButton>();

        Container container = frame.getContentPane();

        JTextField field = new JTextField();
        field.setBounds(5, 5, 365, 30);
        container.add(field);
        for ( int j = 0; j < 4; j++) {
            for (int i = 0; i < 3; i++) {
                //String str = Integer.toString(i + 1 + j * 3);
                String str = digits[i + j * 3];
                JButton button = new JButton(str);
                button.setBounds(5 + i * 60, 45 + j * 40, 50, 30);
                container.add(button);
            }
        }

        for ( int j = 0; j < 4; j++) {
            for (int i = 0; i < 3; i++) {
                String str = functions[i + j * 3];
                JButton button = new JButton(str);
                button.setBounds(200 + i * 60, 45 + j * 40, 50, 30);
                container.add(button);
            }
        }

        frame.setVisible(true);
    }
}