Homework14(Ended Panel realisation)

helloCalculator_Main.java

package helloCalculator;

import java.awt.*;

public class Main{
    public static void main(String[] args) {

        SimpleCalculator t = new SimpleCalculator("MegoCalc by DScoder");
        t.setDefaultCloseOperation(t.EXIT_ON_CLOSE);
        t.setBounds(100, 100, 300, 250);
        t.setMinimumSize(new Dimension(250,200));
        t.setVisible(true);


    }
}

helloCalculator_SimpleCalculator.java

package helloCalculator;

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

public class SimpleCalculator extends JFrame {

    public SimpleCalculator(String name) {
        super(name);

        //Создание кросплатформенного МегоКалькулятора!
        //Container(BorderLayout) = panel1(BorderLayout) + panel2(GridLayout)


        Container cont = getContentPane();
        cont.setLayout(new BorderLayout());
        JPanel panel1 = new JPanel();
        JPanel panel2 = new JPanel();
        cont.add(panel1, BorderLayout.NORTH);
        cont.add(panel2, BorderLayout.CENTER);

        panel1.setLayout(new BorderLayout());
        panel1.add(new JTextArea(), BorderLayout.CENTER);
        JButton but = new JButton("=");
        panel1.add(but, BorderLayout.EAST);

        panel2.setLayout(new GridLayout(4,4,4,4));
        ArrayList<JButton> buttons = new ArrayList<JButton>();
        char a[] = new char[]{'+','-','*','/','1','2','3','4','5','6','7','8','9','0','.','C'};
        for (int i=0; i<16; i++) {
            Character c = a[i];
            String d = c.toString();
            buttons.add(new JButton(d));
            panel2.add(buttons.get(i));
        }

        //Реализация технологии МегаКалькулятора!

    }
}