OOP2015 Assignment No.2

Ex2_4_1.java

/*
 * Ex2_4_1
 * 
 * Copyright (c) 2015 Kazunori Jo
 * 
 * This software is released under the MIT License.
 * http://opensource.org/licenses/mit-license.php
 */

import java.awt.BorderLayout;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;

public class Ex2_4_1 {
    public static void main(String argv[]) {
        JFrame window = new JFrame("Hello World!");

        ImageIcon icon = new ImageIcon("src/yakiniku.jpg");
        JButton button = new JButton(icon);

        window.add(button, BorderLayout.CENTER);
        window.pack();
        window.setVisible(true);
    }
}

Ex2_4_2.java

/*
 * Ex2_4_2
 * 
 * Copyright (c) 2015 Kazunori Jo
 * 
 * This software is released under the MIT License.
 * http://opensource.org/licenses/mit-license.php
 */

import java.awt.BorderLayout;
import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class Ex2_4_2 {
    public static void main(String argv[]) {
        JFrame window = new JFrame("Calculator");

        JTextField text = new JTextField();
        text.setText("0");
        window.add(text, BorderLayout.NORTH);

        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(4, 4));

        String[] labels = {
                "1", "2", "3", "+",
                "4", "5", "6", "-",
                "7", "8", "9", "*",
                "0", ".", "=", "/"
        };

        for (String label : labels) {
            JButton button = new JButton(label);
            panel.add(button, BorderLayout.CENTER);
        }

        window.add(panel, BorderLayout.SOUTH);
        window.pack();
        window.setVisible(true);
    }
}