kalkulackaa

public class JFrame extends javax.swing.JFrame {

    int sum;
    int difference;
    int multiplication;
    int quotient;

    int sucet[] = sucet();
    int rozdiel[] = rozdiel();
    int sucin[] = sucin();
    int podiel[] = podiel();

    String sum_s;
    String difference_s;
    String multiplication_s;
    String quotient_s;

    int accepted = 0;


    public JFrame() {
        initComponents();
    }

    protected int[] sucet() {
        int x = (int) (Math.random()* 20);
        int y = (int) (Math.random()* 20);
        return new int[] {x, y};
    }

    protected int[] rozdiel() {
        int x = (int) (Math.random()* 20);
        int y = (int) (Math.random()* 20);
        return new int[] {x, y};
    }

    protected int[] sucin() {
        int x = (int) (Math.random()* 20);
        int y = (int) (Math.random()* 20);
        return new int[] {x, y};
    }

    protected int[] podiel() {
        int x = (int) (Math.random()* 20);
        int y = (int) (Math.random()* 20);
        return new int[] {x, y};
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jTextField2 = new javax.swing.JTextField();
        jTextField3 = new javax.swing.JTextField();
        jTextField4 = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jLabel5 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jButton1.setText("Daj príklady");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setText("Skontroluj");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jLabel1.setText("Príklad 1");

        jLabel2.setText("Príklad 2");

        jLabel3.setText("Príklad 3");

        jLabel4.setText("Priklad 4");

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        jLabel5.setText("Hodnotenie");

        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()
                .addComponent(jButton1)
                .addGap(41, 41, 41)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel1)
                    .addComponent(jLabel4)
                    .addComponent(jLabel3)
                    .addComponent(jLabel2))
                .addGap(77, 77, 77)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jButton2))
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addComponent(jScrollPane1)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jLabel5)
                .addGap(0, 0, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton1)
                    .addComponent(jButton2)
                    .addComponent(jLabel1)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4)
                    .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 114, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 32, Short.MAX_VALUE)
                .addComponent(jLabel5))
        );

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

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
        sum = sucet[0] + sucet[1];
        difference = rozdiel[0] - rozdiel[1];
        multiplication = sucin[0] * sucin[1];
        quotient = podiel[0] / podiel[1];

        jLabel1.setText("" + Integer.toString(sucet[0]) + " + " + Integer.toString(sucet[1]) + " =");
        jLabel2.setText("" + Integer.toString(rozdiel[0]) + " - " + Integer.toString(rozdiel[1]) + " =");
        jLabel3.setText("" + Integer.toString(sucin[0]) + " * " + Integer.toString(sucin[1]) + " =");
        jLabel4.setText("" + Integer.toString(podiel[0]) + " / " + Integer.toString(podiel[1]) + " =");
    }

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
        int sucet_i = Integer.parseInt(jTextField1.getText());
        int rozdiel_i = Integer.parseInt(jTextField2.getText());
        int sucin_i = Integer.parseInt(jTextField3.getText());
        int podiel_i = Integer.parseInt(jTextField4.getText());

        if (sum == sucet_i) {
            sum_s = "" + Integer.toString(sucet[0]) + " + " + Integer.toString(sucet[1]) + " = " + Integer.toString(sum) + " správne";
            accepted++;
        } else {
            sum_s = "" + Integer.toString(sucet[0]) + " + " + Integer.toString(sucet[1]) + " = " + Integer.toString(sucet_i) + " nesprávne (výsledok je " + Integer.toString(sum) + ").";
        }

        if (difference == rozdiel_i) {
            difference_s = "" + Integer.toString(rozdiel[0]) + " - " + Integer.toString(rozdiel[1]) + " = " + Integer.toString(difference) + " správne";
            accepted++;
        } else {
            difference_s = "" + Integer.toString(rozdiel[0]) + " - " + Integer.toString(rozdiel[1]) + " = " + Integer.toString(rozdiel_i) + " nesprávne (výsledok je " + Integer.toString(difference) + ").";
        }

        if (multiplication == sucin_i) {
            multiplication_s = "" + Integer.toString(sucin[0]) + " * " + Integer.toString(sucin[1]) + " = " + Integer.toString(difference) + " správne";
            accepted++;
        } else {
            multiplication_s = "" + Integer.toString(sucin[0]) + " * " + Integer.toString(sucin[1]) + " = " + Integer.toString(sucin_i) + " nesprávne (výsledok je " + Integer.toString(multiplication) + ").";
        }

        if (quotient == podiel_i) {
            quotient_s = "" + Integer.toString(podiel[0]) + " / " + Integer.toString(podiel[1]) + " = " + Integer.toString(quotient) + " správne";
            accepted++;
        } else {
            quotient_s = "" + Integer.toString(podiel[0]) + " / " + Integer.toString(podiel[1]) + " = " + Integer.toString(podiel_i) + " nesprávne (výsledok je " + Integer.toString(quotient) + ").";
        }

        jTextArea1.setText(sum_s + "\n" + difference_s + "\n" + multiplication_s + "\n" + quotient_s);
        jLabel5.setText("Počet správnych odpovedí: " + accepted);
    }

    /**
     * @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://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        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(JFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(JFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(JFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(JFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

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

    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    // End of variables declaration
}