mercredi 24 mai 2017

How to remove an object from ArrayList and reuse the ArrayList?

I'm working on a project for school in which I have to create a Milionaire Game.

I created all the graphic part with the GUI builder and now I'm trying to figure out how to make Buttons interact.

I've got a Frame in which I have the Buttons with the prizes and a Panel with a CardLayout which shows a Label with the question and the 4 answer Buttons.

My purpose is to set enabled the next prize button everytime an answer is correct but I can't figure out how to make prizes Buttons and answer Buttons interact.

When a prize Button is clicked I'd like to show in my CardLayout Panel, a new Panel which shows a new question with its buttons, but never reshows one of the previous questions.

Questions are taken randomly from a String ArrayList.

So pratically I need to understand how I can enable prize buttons when an answer is correct and how to create a method that remove a question String from the ArrayList when used, so that next questions would never be equal.

Here are the codes for my Frame class

public class NuovaPartita extends javax.swing.JFrame {

public NuovaPartita() {
    initComponents();
    getContentPane().setBackground(Color.BLACK);
    setLocationRelativeTo(null);
}

private void initComponents() {

    quindici = new Premi();
    quattordici = new Premi();
    tredici = new Premi();
    dodici = new Premi();
    undici = new Premi();
    dieci = new Premi();
    nove = new Premi();
    otto = new Premi();
    sette = new Premi();
    sei = new Premi();
    cinque = new Premi();
    quattro = new Premi();
    tre = new Premi();
    due = new Premi();
    uno = new Premi();
    gioco = new javax.swing.JPanel();
    domanda1 = new milionarioesame.Domanda1();
    domanda2 = new milionarioesame.Domanda1();
    domanda3 = new milionarioesame.Domanda1();
    domanda4 = new milionarioesame.Domanda1();
    domanda5 = new milionarioesame.Domanda1();

    setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
    setTitle("CHI VUOL ESSER MILIONARIO?");
    setName("nuovaPartita"); // NOI18N
    setResizable(false);
    setSize(new java.awt.Dimension(1600, 900));

    quindici.setText("1.000.000 €");
    quindici.setForeground(Color.RED);

    quattordici.setText("500.000 €");

    tredici.setText("250.000 €");

    dodici.setText("125.000 €");

    undici.setText("64.000 €");

    dieci.setText("32.000 €");
    dieci.setForeground(Color.RED);

    nove.setText("16.000 €");

    otto.setText("8.000 €");

    sette.setText("4.000 €");

    sei.setText("2.000 €");

    cinque.setText("1.000 €");
    cinque.setForeground(Color.RED);
    cinque.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            cinqueActionPerformed(evt);
        }
    });

    quattro.setText("400 €");
    quattro.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            quattroActionPerformed(evt);
        }
    });

    tre.setText("300 €");
    tre.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            treActionPerformed(evt);
        }
    });

    due.setText("200 €");
    due.setEnabled(true);
    due.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            dueActionPerformed(evt);
        }
    });

    uno.setText("100 €");
    uno.setEnabled(true);
    uno.setBackground(Color.YELLOW);

    gioco.setBackground(new java.awt.Color(0, 0, 0));
    gioco.setLayout(new java.awt.CardLayout());
    gioco.add(domanda1, "card2");

    domanda2.dom = domanda2.domande1.get(domanda2.idx2);
    gioco.add(domanda2, "card3");

    domanda3.dom = domanda3.domande1.get(domanda3.idx3);
    gioco.add(domanda3, "card4");

    domanda4.dom = domanda4.domande1.get(domanda4.idx4);
    gioco.add(domanda4, "card5");

    domanda5.dom = domanda5.domande1.get(domanda5.idx5);
    gioco.add(domanda5, "card6");

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addComponent(tredici, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(dodici, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(undici, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(dieci, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(nove, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(otto, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(sette, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(sei, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(cinque, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(quattro, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(tre, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(due, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(uno, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(quindici, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(quattordici, javax.swing.GroupLayout.PREFERRED_SIZE, 420, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
            .addComponent(gioco, javax.swing.GroupLayout.DEFAULT_SIZE, 1145, Short.MAX_VALUE)
            .addContainerGap())
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addGap(30, 30, 30)
            .addComponent(quindici, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(quattordici, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(tredici, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(dodici, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(undici, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(dieci, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(nove, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(otto, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(sette, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addGap(6, 6, 6)
            .addComponent(sei, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(cinque, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(quattro, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(tre, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(due, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(uno, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addContainerGap(49, Short.MAX_VALUE))
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addComponent(gioco, javax.swing.GroupLayout.DEFAULT_SIZE, 876, Short.MAX_VALUE)
            .addContainerGap())
    );

    pack();
}// </editor-fold>                        

private void dueActionPerformed(java.awt.event.ActionEvent evt) {                                    
    // TODO add your handling code here:
    gioco.removeAll();
    gioco.add(domanda2);
    gioco.repaint();
    gioco.revalidate();
}                                   

private void treActionPerformed(java.awt.event.ActionEvent evt) {                                    
    // TODO add your handling code here:
    gioco.removeAll();
    gioco.add(domanda3);
    gioco.repaint();
    gioco.revalidate();
}                                   

private void quattroActionPerformed(java.awt.event.ActionEvent evt) {                                        
    // TODO add your handling code here:
    gioco.removeAll();
    gioco.add(domanda4);
    gioco.repaint();
    gioco.revalidate();
}                                       

private void cinqueActionPerformed(java.awt.event.ActionEvent evt) {                                       
    // TODO add your handling code here:
    gioco.removeAll();
    gioco.add(domanda5);
    gioco.repaint();
    gioco.revalidate();
}                                      

/**
 * @param args the command line arguments
 */
public static void main(String args[]) {
    /* Set the Nimbus look and feel */
    //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
    /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
     * For details see http://ift.tt/1cNmMj1 
     */
    try {
        for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
            if ("Nimbus".equals(info.getName())) {
                javax.swing.UIManager.setLookAndFeel(info.getClassName());
                break;
            }
        }
    } catch (ClassNotFoundException ex) {
        java.util.logging.Logger.getLogger(NuovaPartita.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (InstantiationException ex) {
        java.util.logging.Logger.getLogger(NuovaPartita.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (IllegalAccessException ex) {
        java.util.logging.Logger.getLogger(NuovaPartita.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (javax.swing.UnsupportedLookAndFeelException ex) {
        java.util.logging.Logger.getLogger(NuovaPartita.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    }
    //</editor-fold>
    //</editor-fold>

    /* Create and display the form */
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new NuovaPartita().setVisible(true);
        }
    });
}

// Variables declaration - do not modify                     
private javax.swing.JButton cinque;
private javax.swing.JButton dieci;
private javax.swing.JButton dodici;
private milionarioesame.Domanda1 domanda1;
private milionarioesame.Domanda1 domanda2;
private milionarioesame.Domanda1 domanda3;
private milionarioesame.Domanda1 domanda4;
private milionarioesame.Domanda1 domanda5;
private javax.swing.JButton due;
private javax.swing.JPanel gioco;
private javax.swing.JButton nove;
private javax.swing.JButton otto;
private javax.swing.JButton quattordici;
private javax.swing.JButton quattro;
private javax.swing.JButton quindici;
private javax.swing.JButton sei;
private javax.swing.JButton sette;
private javax.swing.JButton tre;
private javax.swing.JButton tredici;
private javax.swing.JButton undici;
public javax.swing.JButton uno;
// End of variables declaration                   

and for my Panel class. PS: I removed the layout generated code to make number of characters fit with Stackoverflow standards.

  public class Domanda1 extends javax.swing.JPanel {

public Domanda1() {
    initComponents();
}

private void initComponents() {

    domanda = new javax.swing.JLabel();
    button1 = new Button();
    button4 = new Button();
    button3 = new Button();
    button2 = new Button();
    haiPerso = new javax.swing.JLabel();

    setBackground(new java.awt.Color(0, 0, 0));
    setPreferredSize(new java.awt.Dimension(1160, 890));

    domanda.setText("<html>" + dom + "</html>");
    domanda.setFont(cms);
    domanda.setForeground(Color.WHITE);
    domanda.setHorizontalAlignment(JLabel.CENTER);

    button1.setText("button1");
    if (dom.equals(d1)) //equals per le stringhe, NON ==
    {
        button1.setText(r11);
    };
    if (dom.equals(d2))
    {
        button1.setText(r21);
    };
    if (dom.equals(d3))
    {
        button1.setText(r31);
    };
    if (dom.equals(d4))
    {
        button1.setText(r41);
    };
    if (dom.equals(d5))
    {
        button1.setText(r51);
    };
    if (dom.equals(d6))
    {
        button1.setText(r61);
    };
    if (dom.equals(d7))
    {
        button1.setText(r71);
    };
    if (dom.equals(d8))
    {
        button1.setText(r81);
    };
    if (dom.equals(d9))
    {
        button1.setText(r91);
    };
    if (dom.equals(d10))
    {
        button1.setText(r101);
    };
    button1.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            button1ActionPerformed(evt);
        }
    });

    button4.setText("button4");
    if (dom.equals(d1))
    {
        button4.setText(r14);
    };
    if (dom.equals(d2))
    {
        button4.setText(r24);
    };
    if (dom.equals(d3))
    {
        button4.setText(r34);
    };
    if (dom.equals(d4))
    {
        button4.setText(r44);
    };
    if (dom.equals(d5))
    {
        button4.setText(r54);
    };
    if (dom.equals(d6))
    {
        button4.setText(r64);
    };
    if (dom.equals(d7))
    {
        button4.setText(r74);
    };
    if (dom.equals(d8))
    {
        button4.setText(r84);
    };
    if (dom.equals(d9))
    {
        button4.setText(r94);
    };
    if (dom.equals(d10))
    {
        button4.setText(r104);
    };
    button4.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            button4ActionPerformed(evt);
        }
    });

    button3.setText("button3");
    if (dom.equals(d1))
    {
        button3.setText(r13);
    };
    if (dom.equals(d2))
    {
        button3.setText(r23);
    };
    if (dom.equals(d3))
    {
        button3.setText(r33);
    };
    if (dom.equals(d4))
    {
        button3.setText(r43);
    };
    if (dom.equals(d5))
    {
        button3.setText(r53);
    };
    if (dom.equals(d6))
    {
        button3.setText(r63);
    };
    if (dom.equals(d7))
    {
        button3.setText(r73);
    };
    if (dom.equals(d8))
    {
        button3.setText(r83);
    };
    if (dom.equals(d9))
    {
        button3.setText(r93);
    };
    if (dom.equals(d10))
    {
        button3.setText(r103);
    };
    button3.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            button3ActionPerformed(evt);
        }
    });

    button2.setText("button2");
    if (dom.equals(d1))
    {
        button2.setText(r12);
    };
    if (dom.equals(d2))
    {
        button2.setText(r22);
    };
    if (dom.equals(d3))
    {
        button2.setText(r32);
    };
    if (dom.equals(d4))
    {
        button2.setText(r42);
    };
    if (dom.equals(d5))
    {
        button2.setText(r52);
    };
    if (dom.equals(d6))
    {
        button2.setText(r62);
    };
    if (dom.equals(d7))
    {
        button2.setText(r72);
    };
    if (dom.equals(d8))
    {
        button2.setText(r82);
    };
    if (dom.equals(d9))
    {
        button2.setText(r92);
    };
    if (dom.equals(d10))
    {
        button2.setText(r102);
    };
    button2.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            button2ActionPerformed(evt);
        }
    });

    haiPerso.setText("HAI PERSO");
    haiPerso.setHorizontalAlignment(JLabel.CENTER);
    haiPerso.setVisible(false);
    haiPerso.setFont(cms);
    haiPerso.setForeground(Color.RED);


private void button1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
    // TODO add your handling code here:
    if (button1.getText().equals(r11) || button1.getText().equals(r51) || button1.getText().equals(r61))
    {
        button1.setBackground(Color.GREEN);
        button1.setForeground(Color.BLACK);
        button2.setEnabled(false);
        button3.setEnabled(false);
        button4.setEnabled(false);
        haiPerso.setText("CORRETTO!");
        haiPerso.setForeground(Color.GREEN);
        haiPerso.setVisible(true);
    }
    else
    {
        button1.setBackground(Color.red);
        haiPerso.setVisible(true);
        button2.setEnabled(false);
        button3.setEnabled(false);
        button4.setEnabled(false);
    }
}                                       

private void button2ActionPerformed(java.awt.event.ActionEvent evt) {                                        
    // TODO add your handling code here:
    if (button2.getText().equals(r72) || button2.getText().equals(r82))
        button2.setBackground(Color.GREEN);
        button2.setForeground(Color.BLACK);
        button1.setEnabled(false);
        button3.setEnabled(false);
        button4.setEnabled(false);
        haiPerso.setText("CORRETTO!");
        haiPerso.setForeground(Color.GREEN);
        haiPerso.setVisible(true);
    }
    else
    {
        button2.setBackground(Color.red);
        haiPerso.setVisible(true);
        button1.setEnabled(false);
        button3.setEnabled(false);
        button4.setEnabled(false);
    }
}                                       

private void button3ActionPerformed(java.awt.event.ActionEvent evt) {                                        
    // TODO add your handling code here:
    if (button3.getText().equals(r23) || button3.getText().equals(r43) || button3.getText().equals(r93))
    {
        button3.setBackground(Color.GREEN);
        button3.setForeground(Color.BLACK);
        button2.setEnabled(false);
        button1.setEnabled(false);
        button4.setEnabled(false);
        haiPerso.setText("CORRETTO!");
        haiPerso.setForeground(Color.GREEN);
        haiPerso.setVisible(true);
    }
    else
    {
        button3.setBackground(Color.red);
        haiPerso.setVisible(true);
        button2.setEnabled(false);
        button1.setEnabled(false);
        button4.setEnabled(false);
    }
}                                       

private void button4ActionPerformed(java.awt.event.ActionEvent evt) {                                        
    // TODO add your handling code here:
    if (button4.getText().equals(r34) || button4.getText().equals(r104))
    {
        button4.setBackground(Color.GREEN);
        button4.setForeground(Color.BLACK);
        button2.setEnabled(false);
        button3.setEnabled(false);
        button1.setEnabled(false);            
        haiPerso.setText("CORRETTO!");
        haiPerso.setForeground(Color.GREEN);
        haiPerso.setVisible(true);
    }
    else
    {
        button4.setBackground(Color.red);
        haiPerso.setVisible(true);
        button2.setEnabled(false);
        button3.setEnabled(false);
        button1.setEnabled(false);
    }
}                                       


// Variables declaration - do not modify                     
public javax.swing.JButton button1;
public javax.swing.JButton button2;
public javax.swing.JButton button3;
public javax.swing.JButton button4;
public javax.swing.JLabel domanda;
private javax.swing.JLabel haiPerso;
// End of variables declaration                   

String d1 = new String("Alessandro Manzoni, noto");
String d2 = new String("Quale di queste città NON fa provincia nel Lazio?");
String d3 = new String("Se si moltiplicano fra di loro tutte le cifre che si trovano sul telefono fisso, si ottiene");
String d4 = new String("Quale di questi animali vive in acque marine?");
String d5 = new String("Cosa significa edulcorare?");
String d6 = new String("Quanti sono i cuccioli di dalmata rapiti in un famoso film Disney?");
String d7 = new String("Quale tra questi noti best-seller di Stephen King è ambientato in una prigione?");
String d8 = new String("Quale di questi pianeti è più vicino al Sole?");
String d9 = new String("Quale tra questi NON è il nome di una moneta?");
String d10 = new String("Quanti sono i magi che si recano a visitare Gesù bambino?");

String r11 = new String("Scrittore");
String r12 = new String("Esploratore");
String r13 = new String("Politico");
String r14 = new String("Medico");

String r21 = new String("Roma");
String r22 = new String("Viterbo");
String r23 = new String("Formia");
String r24 = new String("Frosinone");

String r31 = new String("Circa 350.000");
String r32 = new String("Più di 500.000");
String r33 = new String("Meno di 500");
String r34 = new String("0");

String r41 = new String("Castoro");
String r42 = new String("Coccodrillo");
String r43 = new String("Delfino");
String r44 = new String("Rana");

String r51 = new String("Addolcire");
String r52 = new String("Rimproverare");
String r53 = new String("Educare");
String r54 = new String("Colorare");

String r61 = new String("99");
String r62 = new String("101");
String r63 = new String("100");
String r64 = new String("90");

String r71 = new String("Shining");
String r72 = new String("Il miglio verde");
String r73 = new String("Carrie");
String r74 = new String("Insomnia");

String r81 = new String("Urano");
String r82 = new String("Venere");
String r83 = new String("Terra");
String r84 = new String("Giove");

String r91 = new String("Lira");
String r92 = new String("Grano");
String r93 = new String("Pulvino");
String r94 = new String("Corona");

String r101 = new String("5");
String r102 = new String("2");
String r103 = new String("1");
String r104 = new String("3");


Font cms = new Font("Comic Sans MS", 0, 30);

String[] aDomande1 = {d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11, d12, d13, d14, d15, d16, d17, d18, d19, d20};

ArrayList<String> domande1 = new ArrayList(Arrays.asList(aDomande1));

Random rand = new Random();
int idx = rand.nextInt(domande1.size());
int idx2 = rand.nextInt(domande1.size() - (idx));
int idx3 = rand.nextInt(domande1.size() - (idx2));
int idx4 = rand.nextInt(domande1.size() - (idx3));
int idx5 = rand.nextInt(domande1.size() - (idx4));
String dom = domande1.get(idx);




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