Classe Main.java


Code : Java
public class Main {

/**
* @param args
*/
public static void main(String[] args) {
Calculatrice calculette = new Calculatrice();

}

}



Classe Calculatrice.java


Code : Java

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;


public class Calculatrice extends JFrame {

private JPanel container = new JPanel();

String[] tab_string = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "0", ".", "=", "C", "+", "-", "*", "/"};
JButton[] tab_button = new JButton[tab_string.length];

private JLabel ecran = new JLabel();
private Dimension dim = new Dimension(50, 40);
private Dimension dim2 = new Dimension(50, 31);
private double chiffre1;
private boolean clicOperateur = false, update = false;
private String operateur = "";

public Calculatrice(){

this.setSize(240, 260);
this.setTitle("Calculette");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLocationRelativeTo(null);
this.setResizable(false);
initComposant();

this.setContentPane(container);
this.setVisible(true);
}

private void initComposant(){

Font police = new Font("Arial", Font.BOLD, 20);
ecran = new JLabel("0");
ecran.setFont(police);
ecran.setHorizontalAlignment(JLabel.RIGHT);
ecran.setPreferredSize(new Dimension(220, 20));

JPanel operateur = new JPanel();
operateur.setPreferredSize(new Dimension(55, 225));
JPanel chiffre = new JPanel();
chiffre.setPreferredSize(new Dimension(165, 225));
JPanel panEcran = new JPanel();
panEcran.setPreferredSize(new Dimension(220, 30));


for(int i = 0; i < tab_string.length; i++)
{

tab_button[i] = new JButton(tab_string[i]);
tab_button[i].setPreferredSize(dim);

switch(i){

case 11 :
tab_button[i].addActionListener(new EgalListener());
chiffre.add(tab_button[i]);
break;

case 12 :
tab_button[i].setForeground(Color.red);
tab_button[i].addActionListener(new ResetListener());
operateur.add(tab_button[i]);
break;

case 13 :
tab_button[i].addActionListener(new PlusListener());
tab_button[i].setPreferredSize(dim2);
operateur.add(tab_button[i]);
break;

case 14 :
tab_button[i].addActionListener(new MoinsListener());
tab_button[i].setPreferredSize(dim2);
operateur.add(tab_button[i]);
break;

case 15 :
tab_button[i].addActionListener(new MultiListener());
tab_button[i].setPreferredSize(dim2);
operateur.add(tab_button[i]);
break;

case 16 :
tab_button[i].addActionListener(new DivListener());
tab_button[i].setPreferredSize(dim2);
operateur.add(tab_button[i]);
break;

default :
chiffre.add(tab_button[i]);
tab_button[i].addActionListener(new ChiffreListener());
break;
}

}

panEcran.add(ecran);
panEcran.setBorder(BorderFactory.createLineBorder(Color.black));

container.add(panEcran, BorderLayout.NORTH);
container.add(chiffre, BorderLayout.CENTER);
container.add(operateur, BorderLayout.EAST);

}


private void calcul(){
if(operateur.equals("+"))
{
chiffre1 = chiffre1 + Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}

if(operateur.equals("-"))
{
chiffre1 = chiffre1 - Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}

if(operateur.equals("*"))
{
chiffre1 = chiffre1 * Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}

if(operateur.equals("/"))
{
try{
chiffre1 = chiffre1 / Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}catch(ArithmeticException e){
ecran.setText("0");
}
}
}

class ChiffreListener implements ActionListener{

@Override
public void actionPerformed(ActionEvent e) {
//On affiche le chiffre en plus dans le label
String str = ((JButton)e.getSource()).getText();

if(update)
{
update = false;
}
else
{
if(!ecran.getText().equals("0"))
str = ecran.getText() + str;
}

ecran.setText(str);
}

}


class EgalListener implements ActionListener{

@Override
public void actionPerformed(ActionEvent arg0) {
calcul();
update = true;
clicOperateur = false;
}

}


class PlusListener implements ActionListener{

@Override
public void actionPerformed(ActionEvent arg0) {

if(clicOperateur)
{
calcul();
ecran.setText(String.valueOf(chiffre1));
}
else
{
chiffre1 = Double.valueOf(ecran.getText()).doubleValue();
clicOperateur = true;
}
operateur = "+";
update = true;
}

}

class MoinsListener implements ActionListener{

@Override
public void actionPerformed(ActionEvent arg0) {
if(clicOperateur)
{
calcul();
ecran.setText(String.valueOf(chiffre1));
}
else
{
chiffre1 = Double.valueOf(ecran.getText()).doubleValue();
clicOperateur = true;
}
operateur = "-";
update = true;
}

}


class MultiListener implements ActionListener{

@Override
public void actionPerformed(ActionEvent arg0) {
if(clicOperateur)
{
calcul();
ecran.setText(String.valueOf(chiffre1));
}
else
{
chiffre1 = Double.valueOf(ecran.getText()).doubleValue();
clicOperateur = true;
}
operateur = "*";
update = true;
}

}


class DivListener implements ActionListener{

@Override
public void actionPerformed(ActionEvent arg0) {
if(clicOperateur)
{
calcul();
ecran.setText(String.valueOf(chiffre1));
}
else
{
chiffre1 = Double.valueOf(ecran.getText()).doubleValue();
clicOperateur = true;

}
operateur = "/";
update = true;
}

}


class ResetListener implements ActionListener{

@Override
public void actionPerformed(ActionEvent arg0) {
clicOperateur = false;
update = true;
chiffre1 = 0;
operateur = "";
ecran.setText("");
}

}

}