Notes

import java.awt.Component;
import javax.swing.*;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

public class MainClass {

private static final Component Selam = null;


public MainClass() {
JFrame frame = new JFrame("Hesap Makinesi");
frame.setVisible(true);
frame.setSize(300, 350);
frame.setLayout(null);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);

JMenuBar menu = new JMenuBar();
JMenuItem ss = new JMenuItem();

frame.setJMenuBar(menu);
JMenu yardim = new JMenu("Yardım");
menu.add(yardim);
JMenu hakkinda = new JMenu("Hakkında");
menu.add(hakkinda);

hakkinda.addMouseListener(new MouseAdapter() {

public void mousePressed(MouseEvent e) {

JOptionPane.showMessageDialog(null, "BU BASİT BİR HESAP MAKİNESİDİR.");

}


});


yardim.addMouseListener(new MouseAdapter() {

public void mousePressed(MouseEvent e) {

JOptionPane.showMessageDialog(null, "YAPMAK İSTEDİĞİNİZ İŞLEMİ SEÇİP ='E TIKLAYINIZ.");

}


});





bilesenler(frame.getContentPane());

}


private void bilesenler(Container contentPane) {

JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel();
JLabel label1 = new JLabel("0");
JTextField tf = new JTextField(20);

JButton btn0 = new JButton("0");
JButton btn1 = new JButton("1");
JButton btn2 = new JButton("2");
JButton btn3 = new JButton("3");
JButton btn4 = new JButton("4");
JButton btn5 = new JButton("5");
JButton btn6 = new JButton("6");
JButton btn7 = new JButton("7");
JButton btn8 = new JButton("8");
JButton btn9 = new JButton("9");
JButton btn10 = new JButton("+");
JButton btn11 = new JButton("-");
JButton btn12 = new JButton("/");
JButton btn13 = new JButton("*");
JButton btn14 = new JButton("=");
JButton btn15 = new JButton("C");


tf.setEditable(false);

panel1.setBounds(0,0,240,60);
panel2.setBounds(0,60,350,350);
panel1.setLayout(null);
panel2.setLayout(null);




label1.setBounds(135, 0, 50, 50);
tf.setBounds(65, 40,150, 20);


//ilk sıra
btn7.setBounds(40, 20, 42, 42);
btn8.setBounds(90,20,42,42);
btn9.setBounds(140,20,42,42);
btn10.setBounds(190,20,42,42);

//ikinci sıra
btn4.setBounds(40, 65, 42, 42);
btn5.setBounds(90,65,42,42);
btn6.setBounds(140,65,42,42);
btn11.setBounds(190,65,42,42);

//ücüncü sıra
btn1.setBounds(40, 110, 42, 42);
btn2.setBounds(90,110,42,42);
btn3.setBounds(140,110,42,42);
btn12.setBounds(190,110,42,42);

//dördüncü sıra
btn0.setBounds(40, 155, 42, 42);
btn15.setBounds(90,155,42,42);
btn14.setBounds(140,155,42,42);
btn13.setBounds(190,155,42,42);




btn7.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"7");

}

});



btn8.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"8");

}

});


btn9.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"9");

}

});


btn4.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"4");

}

});


btn5.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"5");

}

});

btn6.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"6");

}

});

btn1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"1");

}

});

btn2.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"2");

}

});

btn3.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"3");

}

});


btn0.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {
String temp = tf.getText();
tf.setText(temp +"0");

}

});




double sonuc = 0;

if(btn10.isSelected() || btn11.isSelected() || btn12.isSelected() || btn13.isSelected() ) {

Double sayi1 = Double.parseDouble(tf.getText());
sonuc = sonuc+sayi1;
tf.setText(" ");
System.out.println(sonuc);

}



panel2.add(btn7);
panel2.add(btn8);
panel2.add(btn9);
panel2.add(btn10);
panel2.add(btn4);
panel2.add(btn5);
panel2.add(btn6);
panel2.add(btn11);
panel2.add(btn1);
panel2.add(btn2);
panel2.add(btn3);
panel2.add(btn12);
panel2.add(btn0);
panel2.add(btn15);
panel2.add(btn14);
panel2.add(btn13);


panel1.add(label1);
panel1.add(tf);

contentPane.add(panel1);
contentPane.add(panel2);
}


public double hesapla() {



return 0;
}





public static void main(String[] args) {
// TODO Auto-generated method stub

new MainClass();


}

}