CCB Premier Import
This commit is contained in:
Christian Cunat-Brulé
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>PJCalc</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>
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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=1.8
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.source=1.8
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import java.awt.BorderLayout;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import javax.swing.BorderFactory;
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JLabel;
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import javax.swing.JPanel;
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public class Calculatrice extends JFrame {
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private JPanel container = new JPanel();
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//Tableau stockant les éléments à afficher dans la calculatrice
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String[] tab_string = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "0", ".", "=", "C", "+", "-", "*", "/"};
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//Un bouton par élément à afficher
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JButton[] button = new JButton[tab_string.length];
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private JLabel ecran = new JLabel();
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private Dimension dim = new Dimension(50, 30);
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public double getValeur;
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private boolean clicOperateur = false, update = false;
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private String operateur = "";
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public Calculatrice(){
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this.setSize(280, 300);
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this.setTitle("Calculette");
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this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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this.setLocationRelativeTo(null);
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this.setResizable(false);
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//On initialise le conteneur avec tous les composants
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initComposant();
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//On ajoute le conteneur
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this.setContentPane(container);
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this.setVisible(true);
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}
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private void initComposant(){
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//On définit la police d'écriture à utiliser
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Font police = new Font("Bell MT", Font.BOLD, 50);
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ecran = new JLabel("0");
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ecran.setFont(police);
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//On aligne les informations à droite dans le JLabel
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ecran.setHorizontalAlignment(JLabel.RIGHT);
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ecran.setPreferredSize(new Dimension(220, 40));
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ecran.setForeground(Color.blue);
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JPanel operateur = new JPanel();
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operateur.setPreferredSize(new Dimension(75, 255));
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JPanel chiffre = new JPanel();
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chiffre.setPreferredSize(new Dimension(165, 255));
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JPanel panEcran = new JPanel();
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panEcran.setPreferredSize(new Dimension(250, 50));
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//On parcourt le tableau initialisé
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//afin de créer nos boutons
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for(int i = 0; i < tab_string.length; i++){
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button[i] = new JButton(tab_string[i]);
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button[i].setBackground(Color.lightGray);
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button[i].setPreferredSize(dim);
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switch(i){
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//Pour chaque élément situé à la fin du tableau
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//et qui n'est pas un chiffre
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//on définit le comportement à avoir grâce à un listener
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case 11 :
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button[i].addActionListener(new EgalListener());
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button[i].setBackground(Color.green);
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chiffre.add(button[i]);
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break;
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case 12 :
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button[i].setForeground(Color.blue);
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button[i].addActionListener(new ResetListener());
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button[i].setBackground(Color.gray);
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operateur.add(button[i]);
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break;
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case 13 :
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button[i].addActionListener(new PlusListener());
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button[i].setPreferredSize(dim);
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button[i].setBackground(Color.red);
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operateur.add(button[i]);
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break;
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case 14 :
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button[i].addActionListener(new MoinsListener());
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button[i].setPreferredSize(dim);
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button[i].setBackground(Color.red);
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operateur.add(button[i]);
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break;
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case 15 :
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button[i].addActionListener(new MultiListener());
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button[i].setPreferredSize(dim);
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button[i].setBackground(Color.red);
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operateur.add(button[i]);
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break;
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case 16 :
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button[i].addActionListener(new DivListener());
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button[i].setPreferredSize(dim);
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button[i].setBackground(Color.red);
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operateur.add(button[i]);
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break;
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default :
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//Par défaut, ce sont les premiers éléments du tableau
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//donc des chiffres, on affecte alors le bon listener
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chiffre.add(button[i]);
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button[i].addActionListener(new ChiffreListener());
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break;
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}
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}
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panEcran.add(ecran);
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panEcran.setBorder(BorderFactory.createLineBorder(Color.MAGENTA));
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container.add(panEcran, BorderLayout.NORTH);
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container.add(chiffre, BorderLayout.CENTER);
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container.add(operateur, BorderLayout.EAST);
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}
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//Méthode permettant d'effectuer un calcul selon l'opérateur sélectionné
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private void calcul(){
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if(operateur.equals("+")){
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getValeur = getValeur +
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Double.valueOf(ecran.getText()).doubleValue();
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ecran.setText(String.valueOf(getValeur));
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}
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if(operateur.equals("-")){
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getValeur = getValeur -
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Double.valueOf(ecran.getText()).doubleValue();
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ecran.setText(String.valueOf(getValeur));
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}
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if(operateur.equals("*")){
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getValeur = getValeur *
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Double.valueOf(ecran.getText()).doubleValue();
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ecran.setText(String.valueOf(getValeur));
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}
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if(operateur.equals("/")){
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try{
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getValeur = getValeur /
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Double.valueOf(ecran.getText()).doubleValue();
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ecran.setText(String.valueOf(getValeur));
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} catch(ArithmeticException e) {
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ecran.setText("0");
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}
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}
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}
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//Listener utilisé pour les chiffres
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//Permet de stocker les chiffres et de les afficher
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class ChiffreListener implements ActionListener {
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public void actionPerformed(ActionEvent e){
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//On affiche le chiffre additionnel dans le label
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String str = ((JButton)e.getSource()).getText();
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if(update){
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update = false;
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}
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else{
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if(!ecran.getText().equals("0"))
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str = ecran.getText() + str;
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}
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ecran.setText(str);
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}
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}
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//Listener affecté au bouton =
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class EgalListener implements ActionListener {
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public void actionPerformed(ActionEvent arg0){
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calcul();
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update = true;
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clicOperateur = false;
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}
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}
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//Listener affecté au bouton +
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class PlusListener implements ActionListener {
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public void actionPerformed(ActionEvent arg0){
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if(clicOperateur){
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calcul();
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ecran.setText(String.valueOf(getValeur));
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}
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else{
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getValeur = Double.valueOf(ecran.getText()).doubleValue();
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clicOperateur = true;
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}
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operateur = "+";
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update = true;
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}
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}
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//Listener affecté au bouton -
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class MoinsListener implements ActionListener {
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public void actionPerformed(ActionEvent arg0){
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if(clicOperateur){
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calcul();
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ecran.setText(String.valueOf(getValeur));
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}
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else{
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getValeur = Double.valueOf(ecran.getText()).doubleValue();
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clicOperateur = true;
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}
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operateur = "-";
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update = true;
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}
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}
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//Listener affecté au bouton *
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class MultiListener implements ActionListener {
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public void actionPerformed(ActionEvent arg0){
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if(clicOperateur){
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calcul();
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ecran.setText(String.valueOf(getValeur));
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}
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else{
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getValeur = Double.valueOf(ecran.getText()).doubleValue();
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clicOperateur = true;
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}
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operateur = "*";
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update = true;
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}
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}
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//Listener affecté au bouton /
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class DivListener implements ActionListener {
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public void actionPerformed(ActionEvent arg0){
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if(clicOperateur){
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calcul();
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ecran.setText(String.valueOf(getValeur));
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}
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else{
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getValeur = Double.valueOf(ecran.getText()).doubleValue();
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clicOperateur = true;
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}
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operateur = "/";
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update = true;
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}
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}
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//Listener affecté au bouton de remise à zéro
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class ResetListener implements ActionListener {
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public void actionPerformed(ActionEvent arg0){
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clicOperateur = false;
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update = true;
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getValeur = 0;
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operateur = "";
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ecran.setText("");
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}
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}
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}
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@@ -0,0 +1,6 @@
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public class Main {
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public static void main(String[] args) {
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Calculatrice calculette = new Calculatrice();
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}
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}
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