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| import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class calcul extends JFrame implements ActionListener{
String[] tabCar = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "0", ".", "=", "C", "+", "-", "*", "/"};
JButton[] tabBut = new JButton[tabCar.length];
private JPanel panOrg = new JPanel();
private JLabel ecran = new JLabel("0");
private Dimension dimChf = new Dimension(50, 40);
private Dimension dimOpr = new Dimension(50, 30);
public String caractere="";
public double chiffre1;
public double chiffre;
public calcul(){
this.setAlwaysOnTop(true);
this.setSize(240, 250);
this.setLocationRelativeTo(null);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setResizable(false);
JPanel chiffre = new JPanel();
chiffre.setPreferredSize(new Dimension(165, 225));
JPanel operateur = new JPanel();
operateur.setPreferredSize(new Dimension(55, 225));
JPanel panEcran = new JPanel();
panEcran.setPreferredSize(new Dimension(220, 30));
ecran.setHorizontalAlignment(JLabel.RIGHT);
ecran.setPreferredSize(new Dimension(220, 20));
for (int i=0;i<tabCar.length;i++){
tabBut[i]=new JButton(tabCar[i]);
tabBut[i].setPreferredSize(dimChf);
switch(i){
case 11:
tabBut[i].addActionListener(this);
chiffre.add(tabBut[i]);
break;
case 12:
tabBut[i].addActionListener(this);
tabBut[i].setPreferredSize(dimOpr);
operateur.add(tabBut[i]);
break;
case 13:
tabBut[i].addActionListener(this);
tabBut[i].setPreferredSize(dimOpr);
operateur.add(tabBut[i]);
break;
case 14:
tabBut[i].addActionListener(this);
tabBut[i].setPreferredSize(dimOpr);
operateur.add(tabBut[i]);
break;
case 15:
tabBut[i].addActionListener(this);
tabBut[i].setPreferredSize(dimOpr);
operateur.add(tabBut[i]);
break;
case 16:
tabBut[i].addActionListener(this);
tabBut[i].setPreferredSize(dimOpr);
operateur.add(tabBut[i]);
break;
default :
tabBut[i].addActionListener(this);
tabBut[i].setPreferredSize(dimChf);
chiffre.add(tabBut[i]);
break;
}
}
panEcran.add(ecran);
panEcran.setBorder(BorderFactory.createLineBorder(Color.black));
panOrg.add(panEcran, BorderLayout.NORTH);
panOrg.add(chiffre, BorderLayout.CENTER);
panOrg.add(operateur, BorderLayout.EAST);
this.setContentPane(panOrg);
this.setVisible(true);
}
private void operation(){
if (caractere.equals("+")){
chiffre1 = chiffre1 + Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}
else if (caractere.equals("-")){
chiffre1 = chiffre1 - Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}
else if (caractere.equals("*")){
chiffre1 = chiffre1 * Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}
else if (caractere.equals("/")){
try{
chiffre1 = chiffre1 / Double.valueOf(ecran.getText()).doubleValue();
ecran.setText(String.valueOf(chiffre1));
}catch(ArithmeticException e){
ecran.setText("Division impossible");
}
}
}
public void actionPerformed(ActionEvent arg0) {
if(arg0.getSource()==tabBut[12]){
/* reset */
ecran.setText("0");
}
else if(arg0.getSource()==tabBut[13]){
chiffre = Double.valueOf(ecran.getText()).doubleValue();
caractere="+";
operation();
}
else if(arg0.getSource()==tabBut[14]){
caractere="-";
}
else if(arg0.getSource()==tabBut[15]){
caractere="*";
}
else if(arg0.getSource()==tabBut[16]){
caractere="/";
}
else if(arg0.getSource()==tabBut[11]){
ecran.setText(String.valueOf(chiffre1));
}
else{
String str =((JButton)arg0.getSource()).getText();
if (ecran.getText()=="0"){
ecran.setText(null);
}
else{
str=ecran.getText()+str;
}
ecran.setText(str);
}
}
} |
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