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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"generateur de mdp en java","articleBody":"// Fichier: PasswordGeneratorGUI.java\nimport javax.swing.*;\nimport java.awt.*;\nimport java.awt.datatransfer.*;\nimport java.awt.event.*;\nimport java.security.SecureRandom;\nimport java.util.*;\n\npublic class PasswordGeneratorGUI extends JFrame {\n    private static final String LOWER = \"abcdefghijklmnopqrstuvwxyz\";\n    private static final String UPPER = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ\";\n    private static final String DIGIT = \"0123456789\";\n    private static final String SYMBOL = \"!@#$%^\u0026*;\n\n    private static final Set\u003cCharacter\u003e SIMILAR = new HashSet\u003c\u003e(Arrays.asList(\n            '0','O','o','1','l','I','|','5','S','2','Z','8','B'\n    ));\n    \n\n    private static final SecureRandom RNG = new SecureRandom();\n\n    // UI components\n    private JTextField outputField;\n    private JSlider lengthSlider;\n    private JCheckBox lowerBox, upperBox, digitBox, symbolBox, excludeSimilarBox, requireEachBox;\n    private JLabel entropyLabel, strengthLabel;\n\n    public PasswordGeneratorGUI() {\n        super(\"🔐 Générateur de mots de passe\");\n\n        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);\n        setSize(500, 300);\n        setLayout(new BorderLayout(10,10));\n\n        // Top output\n        JPanel top = new JPanel(new BorderLayout(5,5));\n        outputField = new JTextField();\n        outputField.setFont(new Font(\"Monospaced\", Font.PLAIN, 16));\n        top.add(outputField, BorderLayout.CENTER);\n\n        JButton copyBtn = new JButton(\"Copier\");\n        copyBtn.addActionListener(e -\u003e copyToClipboard());\n        top.add(copyBtn, BorderLayout.EAST);\n\n        add(top, BorderLayout.NORTH);\n\n        // Center controls\n        JPanel center = new JPanel();\n\n        center.setLayout(new GridLayout(0,2));\n\n        lowerBox = new JCheckBox(\"Minuscules (a-z)\", true);\n        upperBox = new JCheckBox(\"Majuscules (A-Z)\", true);\n        digitBox = new JCheckBox(\"Chiffres (0-9)\", true);\n        symbolBox = new JCheckBox(\"Symboles (!@#…)\", true);\n        excludeSimilarBox = new JCheckBox(\"Exclure caractères ambigus (0,O,1,l...)\", true);\n        requireEachBox = new JCheckBox(\"Exiger ≥1 caractère de chaque catégorie\", true);\n\n        center.add(lowerBox);\n        center.add(upperBox);\n        center.add(digitBox);\n        center.add(symbolBox);\n        center.add(excludeSimilarBox);\n        center.add(requireEachBox);\n\n        add(center, BorderLayout.CENTER);\n\n        // Bottom panel\n        JPanel bottom = new JPanel(new BorderLayout(5,5));\n\n        lengthSlider = new JSlider(8, 64, 16);\n        lengthSlider.setMajorTickSpacing(14);\n        lengthSlider.setMinorTickSpacing(2);\n        lengthSlider.setPaintTicks(true);\n        lengthSlider.setPaintLabels(true);\n\n        bottom.add(new JLabel(\"Longueur :\"), BorderLayout.WEST);\n        bottom.add(lengthSlider, BorderLayout.CENTER);\n\n        JButton genBtn = new JButton(\"Générer\");\n        genBtn.addActionListener(e -\u003e generatePassword());\n        bottom.add(genBtn, BorderLayout.EAST);\n\n        add(bottom, BorderLayout.SOUTH);\n\n        // Status panel\n        JPanel status = new JPanel(new GridLayout(2,1));\n        entropyLabel = new JLabel(\"Entropie : -- bits\");\n        strengthLabel = new JLabel(\"Robustesse : --\");\n        status.add(entropyLabel);\n        status.add(strengthLabel);\n        add(status, BorderLayout.WEST);\n\n        setLocationRelativeTo(null); // center window\n        setVisible(true);\n    }\n\n    private void copyToClipboard() {\n        String text = outputField.getText();\n        if (text.isEmpty()) return;\n        Toolkit.getDefaultToolkit()\n                .getSystemClipboard()\n                .setContents(new StringSelection(text), null);\n        JOptionPane.showMessageDialog(this, \"Mot de passe copié !\");\n    }\n\n    private void generatePassword() {\n        int length = lengthSlider.getValue();\n\n        java.util.List\u003cString\u003e sets = new ArrayList\u003c\u003e();\n        if (lowerBox.isSelected()) sets.add(LOWER);\n        if (upperBox.isSelected()) sets.add(UPPER);\n        if (digitBox.isSelected()) sets.add(DIGIT);\n        if (symbolBox.isSelected()) sets.add(SYMBOL);\n\n        String pool = combineAndFilter(sets, excludeSimilarBox.isSelected());\n\n        if (pool.isEmpty()) {\n            JOptionPane.showMessageDialog(this, \"Aucun jeu de caractères disponible !\");\n            return;\n        }\n\n        String pwd = requireEachBox.isSelected()\n                ? generateWithRequirement(length, sets, pool, excludeSimilarBox.isSelected())\n                : randomFromPool(pool, length);\n\n        outputField.setText(pwd);\n\n        // update entropy\n        int uniqueChars = (int) pool.chars().distinct().count();\n        double entropyBits = length * (Math.log(uniqueChars)/Math.log(2));\n        String strength = strengthLabel(entropyBits);\n\n        entropyLabel.setText(String.format(\"Entropie : ~%.0f bits\", entropyBits));\n        strengthLabel.setText(\"Robustesse : \" + strength);\n    }\n\n    private String combineAndFilter(java.util.List\u003cString\u003e sets, boolean excludeSimilar) {\n        StringBuilder sb = new StringBuilder();\n        for (String s : sets) sb.append(s);\n\n        StringBuilder out = new StringBuilder();\n        for (char c : sb.toString().toCharArray()) {\n            if (excludeSimilar \u0026\u0026 SIMILAR.contains(c)) continue;\n            out.append(c);\n        }\n        return out.toString();\n    }\n\n    private String generateWithRequirement(int length, java.util.List\u003cString\u003e sets, String pool, boolean excludeSimilar) {\n        java.util.List\u003cCharacter\u003e chars = new ArrayList\u003c\u003e();\n\n        for (String s : sets) {\n            String filtered = combineAndFilter(Collections.singletonList(s), excludeSimilar);\n            if (!filtered.isEmpty()) {\n                chars.add(filtered.charAt(RNG.nextInt(filtered.length())));\n            }\n        }\n\n        for (int i = chars.size(); i \u003c length; i++) {\n            chars.add(pool.charAt(RNG.nextInt(pool.length())));\n        }\n\n        // shuffle\n        Collections.shuffle(chars, RNG);\n        StringBuilder sb = new StringBuilder();\n        for (char c : chars) sb.append(c);\n        return sb.toString();\n    }\n\n    private String randomFromPool(String pool, int length) {\n        StringBuilder sb = new StringBuilder(length);\n        for (int i = 0; i \u003c length; i++) {\n            sb.append(pool.charAt(RNG.nextInt(pool.length())));\n        }\n        return sb.toString();\n    }\n\n    private String strengthLabel(double bits) {\n        if (bits \u003c 28) return \"Très faible\";\n        if (bits \u003c 36) return \"Faible\";\n        if (bits \u003c 60) return \"Correct\";\n        if (bits \u003c 128) return \"Fort\";\n        return \"Très fort\";\n    }\n\n    public static void main(String[] args) {\n        SwingUtilities.invokeLater(PasswordGeneratorGUI::new);\n    }\n}\n","author":{"url":"https://github.com/zainoxIII","@type":"Person","name":"zainoxIII"},"datePublished":"2025-10-01T13:10:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/188/Java/issues/188"}