[Java] Zagon appleta v HTML

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import javax.swing.border.*;
import java.util.*;

public class Naloga extends JApplet implements ItemListener, ActionListener {

    String[] a;
    String pres = "    ";
    //vprašanje
    String[] n = new String[3];
    //odgovori
    String[][] o = new String[3][3];
    //točke za pravilne odgovore
    int[] tocke = new int[3];
    //pravilni odgovor
    int[] odg = new int[3];
    
    
    
    JFrame frame = new JFrame("Reševanje nalog");
    
    
    //zaporedna številka naloge
    int zap = 0;
    
    //Labela s tekstom, nalogo in odgovorom
    JLabel tekst = new JLabel("");
    JLabel naloga = new JLabel("");
    JLabel odgovor = new JLabel("");
    
    private String Preveri_g = "Preveri_g";
    private String Naprej_g = "Naprej_g";
    
      
    //ustvarimo gumbe
    JRadioButton[] rgumb = new JRadioButton[3];;  
    JButton preveri, naprej;
    
    //spremenljivka za slikice
    Toolkit tool = Toolkit.getDefaultToolkit();
    Image slika = tool.getImage("naloga1.jpg");
    Icon ikona = new ImageIcon(slika);
    JLabel slikaL = new JLabel(ikona);
    
    //grupa, ki bo združila radiobutone - rgumbe, da bodo sodelovali med seboj
    ButtonGroup grupa = new ButtonGroup();
       
    //ustvarimo panelo, ki bo nosila ostale v sebi
    JPanel namizje = new JPanel(new BorderLayout());
    JPanel namizje1 = new JPanel(new BorderLayout());
    JPanel namizje2 = new JPanel(new BorderLayout());
    JPanel resitev = new JPanel(new BorderLayout());

    //ostale panele
    JPanel navodilo = new JPanel(new BorderLayout());
    JPanel nosilna = new JPanel(new GridLayout());
    JPanel odgovori = new JPanel(new GridLayout(3, 1));
    JPanel primeri = new JPanel(new GridLayout());
    JPanel gumbi = new JPanel(new GridLayout(1, 2));
          
    JLabel izpis = new JLabel("");
    
    //panele za applet
    JPanel applet = new JPanel(new GridLayout(8,1));
    JPanel naslov = new JPanel(new BorderLayout());
    JPanel n_1 = new JPanel(new GridLayout(2,1));
    JPanel n_2 = new JPanel(new GridLayout(2,1));
    JPanel n_3 = new JPanel(new GridLayout(2,1));
    JPanel nal1 = new JPanel(new GridLayout(2,2));
    JPanel nal2 = new JPanel(new GridLayout(2,2));
    JPanel nal3 = new JPanel(new GridLayout(2,2));
    JPanel komentar = new JPanel();
    
    //labele za applet
    JLabel[] L1 = new JLabel[2];
    JLabel[] L2 = new JLabel[2];
    JLabel[] L3 = new JLabel[2];
    JLabel kom = new JLabel();
    

    public void Labele() {
        for (int i = 0; i < 2; i++)
        {
            L1[i] = new JLabel(" ");
            L2[i] = new JLabel(" ");
            L3[i] = new JLabel(" ");
        }
    }
    
    public void Oblikuj() {

        applet.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createEtchedBorder()));
        
        naslov.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createEtchedBorder()));
                
        n_1.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createEtchedBorder()));
                
        n_2.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createEtchedBorder()));

        n_3.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createEtchedBorder()));
        komentar.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createEtchedBorder()));
                
        applet.setPreferredSize(new Dimension(500,500));
        naslov.setPreferredSize(new Dimension(40,500));
        n_1.setPreferredSize(new Dimension(60,500));
        nal1.setPreferredSize(new Dimension(40,500));
        n_2.setPreferredSize(new Dimension(60,500));
        nal2.setPreferredSize(new Dimension(40,500));
        n_3.setPreferredSize(new Dimension(60,500));
        nal3.setPreferredSize(new Dimension(40,500));
        komentar.setPreferredSize(new Dimension(30,500));
    }
    
    public void ZgradiApplet()
    {
        Container app = this.getContentPane();
        
        
        Oblikuj();
        
        Labele();
        
        naslov.add(new JLabel("         Rezultati reševanja"));
                
        nal1.add(new JLabel("         Pravilen odgovor: "));
        nal1.add(L1[0]);
        nal1.add(new JLabel("         Dosežene točke: "));
        nal1.add(L1[1]);
        
        nal2.add(new JLabel("         Pravilen odgovor: "));
        nal2.add(L2[0]);
        nal2.add(new JLabel("         Dosežene točke: "));
        nal2.add(L2[1]);
        
        nal3.add(new JLabel("         Pravilen odgovor: "));
        nal3.add(L3[0]);
        nal3.add(new JLabel("         Dosežene točke: "));
        nal3.add(L3[1]);
        
        n_1.add(new JLabel(n[0]));
        n_1.add(nal1);
        n_2.add(new JLabel(n[1]));
        n_2.add(nal2);
        n_3.add(new JLabel(n[2]));
        n_3.add(nal3);

        komentar.add(kom);
        
        applet.add(n_1);
        applet.add(n_2);
        applet.add(n_3);
        
        applet.add(komentar);
        
        app.add(applet);
        
    }
       

    //Panela z navodilom naloge
    public JPanel NavodiloP(){
        
        navodilo.setPreferredSize(new Dimension(350, 50));
        
        naloga.setText(n[0]);
        
        navodilo.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 0, 5, 0),
                BorderFactory.createEtchedBorder()));
                
        navodilo.add(new JLabel(pres), BorderLayout.WEST);
        navodilo.add(naloga, BorderLayout.CENTER);
        
        return navodilo;
    }
    
    //v grupo dodamo stikala oz. radiobuttone
    void DodajStikala(){
       
        //ustvarimo rgumbe z možnimi odgovori
        for (int i = 0; i < 3; i++)
        {
            rgumb[i] = new JRadioButton(o[zap][i]);
            if (i != odg[zap])
                rgumb[i].setActionCommand("NE");
            else
                rgumb[i].setActionCommand("DA");
            rgumb[i].addItemListener(this);
            grupa.add(rgumb[i]);
        }
    }

    //Panela ki vsebuje stikala
    public JPanel OdgovoriP(){
        DodajStikala();
        odgovori.setPreferredSize(new Dimension(200, 250));
        
        odgovori.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createTitledBorder(
                    LineBorder.createGrayLineBorder(),
                    "Možni odgovori")));
          
        for (int i = 0; i < 3; i++)
        {
            odgovori.add(rgumb[i]);
        }
        
        return odgovori;
    }
    
    //Panela ki vsebuje slike
    public JPanel PrimeriP(){
        
        primeri.setPreferredSize(new Dimension(200, 250));
        
        primeri.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 5, 5, 5),
                BorderFactory.createTitledBorder(
                    LineBorder.createGrayLineBorder(),
                    "Slika kot pomoč")));
                    
        
        primeri.add(slikaL);
     
        return primeri;
    }
   
    //Panela ki vsebuje paneli odgovori in primeri
    public JPanel NosilnaP(){
        
        OdgovoriP();
        PrimeriP();
        
        nosilna.add(odgovori);
        nosilna.add(primeri);
        
        nosilna.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(5, 0, 5, 0),
                BorderFactory.createEtchedBorder()));

        return nosilna;
    }
    
    //panela ki vsebuje labelo s tekstom
    public JPanel ResitevP(){
        
        resitev.add(izpis);
        resitev.setPreferredSize(new Dimension(350, 50));
        
        resitev.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(1, 0, 1, 0),
                BorderFactory.createEtchedBorder()));
        
        resitev.add(new JLabel(pres), BorderLayout.WEST);
        resitev.add(tekst, BorderLayout.CENTER);
                
        return resitev;
    }
    
    //panela namizje1 vsebuje panele navodilo, nosilna in resitev
    public JPanel Namizje1P(){
        
        NavodiloP();
        NosilnaP();
        ResitevP();
        
        namizje1.add(navodilo, BorderLayout.NORTH);
        namizje1.add(nosilna, BorderLayout.CENTER);
        namizje1.add(resitev, BorderLayout.SOUTH);
        
        namizje1.setBorder(BorderFactory.createEmptyBorder(5, 5, 0, 5));
        
        return namizje1;
    }
    
    //panela ki vsebuje gumba preveri in naprej
    public JPanel GumbiP(){
        
        gumbi.setPreferredSize(new Dimension(350, 50));
        
        gumbi.setBorder(
            new CompoundBorder(
                BorderFactory.createEmptyBorder(1, 0, 1, 0),
                BorderFactory.createEtchedBorder()));
        
        //ustvarimo in vstavimo v labelo gumba preveri in naprej
        preveri = new JButton("Preveri");
        preveri.setActionCommand(Preveri_g);
        preveri.addActionListener(this);
        gumbi.add(preveri);
        naprej = new JButton("Naprej");
        naprej.setActionCommand(Naprej_g);
        naprej.addActionListener(this);
        gumbi.add(naprej);
        
        return gumbi;
    }
    
    //panela ki vsebuje gumbe
    public JPanel Namizje2P(){
        
        GumbiP();
        
        namizje2.add(gumbi, BorderLayout.SOUTH);
        
        namizje2.setBorder(BorderFactory.createEmptyBorder(0, 5, 5, 5));
        
        return namizje2;
    }
    
    //glavno namizje ki vsebuje namizje1 in namizje2
    public JPanel NamizjeP(){
     
        Namizje1P();
        Namizje2P();
        
        namizje.add(namizje1, BorderLayout.NORTH);
        namizje.add(namizje2, BorderLayout.CENTER);
        
        return namizje;
    }
    
    public void BeriIzDatoteke()
    {

        try
        {
           BufferedReader datoteka = new BufferedReader(new FileReader("datoteka.txt"));

           //trije seti vprašanj
           for (int j = 0; j < 3; j++)
           {
               //prebereš vprašanje in ga shraniš
               n[j] = datoteka.readLine();

               //prebereš možne odgovore in jih shraniš
               for (int k = 0; k < 3; k++)
               {
                    //shraniš možne odgovore
                    o[j][k] = datoteka.readLine();
                }
                //prebereš še številko pravilnega odgovora
                odg[j] = Integer.parseInt(datoteka.readLine());
            }

            datoteka.close();
        }
        catch(IOException e) //če datoteka, ki smo jo klicali za branje ne obstaja
        {
            //System.out.println("Datoteka ne obstaja!");
        }
        
        zap = 0;
        
    }
    
    //glavni program okna
    public void main(String[] args) {

        BeriIzDatoteke();
        
        //oblikujemo applet
        ZgradiApplet();
        
        
        
        //ustvarimo okno
        JFrame.setDefaultLookAndFeelDecorated(true);
        
        //Naloga app = new Naloga();
        
                        
        // uporabimo drsno površino v primeru premajhnega okna
        JScrollPane pane = new JScrollPane(NamizjeP());
        pane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        pane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); 
        
        frame.getContentPane().add(pane, BorderLayout.CENTER);
        frame.pack();
        frame.setVisible(true);
        
        
        
    }
        
    //glavni program appleta
    public void init() {
        
        main(a);
    }
        
    //metoda, ki ugotavlja stanje stikal    
    public void itemStateChanged(ItemEvent event) {

       tekst.setText("");

    }
    
    //metoda ki ugotovi stanje gumbov
    public void actionPerformed(ActionEvent event) {

        int i;
        
        if (event.getActionCommand().equals(Preveri_g))
        {
            //ko uporanbik pritisne gumb preveri, se možnost izbire odgovora prepreči
            rgumb[0].setEnabled(false);
            rgumb[1].setEnabled(false);
            rgumb[2].setEnabled(false);
            
            if (rgumb[odg[zap]].isSelected())
            {
                tekst.setText("Odgovor je pravilen!");
                tocke[zap] = 1;
            }
            else 
                tekst.setText("Odgovor ni pravilen!");
        }
                
                
        if (event.getActionCommand().equals(Naprej_g)) {
            //omogočimo gumbe za odgovore
            rgumb[0].setEnabled(true);
            rgumb[1].setEnabled(true);
            rgumb[2].setEnabled(true);
            
            rgumb[0].setSelected(false);
            rgumb[1].setSelected(false);
            rgumb[2].setSelected(false);
            
            tekst.setText("");
            if (zap < 2)
            {
                zap++;
                naloga.setText(n[zap]);
                
                for (i = 0; i < rgumb.length; i++)
                {
                    rgumb[i].setText(o[zap][i]);
                }
                
                if (zap == 1)
                {
                    primeri.remove(slikaL);
                    slika = tool.getImage("naloga2.jpg");
                    ikona = new ImageIcon(slika);
                    slikaL = new JLabel(ikona);
                    primeri.add(slikaL);
                }
                else if (zap == 2)
                {
                    primeri.remove(slikaL);
                    slika = tool.getImage("naloga3.jpg");
                    ikona = new ImageIcon(slika);
                    slikaL = new JLabel(ikona);
                    primeri.add(slikaL);
                }
                
            }
            else
            {
                zap = 0;
                              
                L1[0].setText(o[0][0]);
                L1[1].setText(String.valueOf(tocke[0]));
                
                L2[0].setText(o[1][1]);
                L2[1].setText(String.valueOf(tocke[1]));
                
                L3[0].setText(o[2][2]);
                L3[1].setText(String.valueOf(tocke[2]));
                    

                int a = 0;
                for (i = 0; i < 3; i++)
                {
                    a = a + tocke[i];
                }
                
                if (a == 3)
                    kom.setText("     Sedi! Pet!");
                else if (a == 2)
                    kom.setText("     Ni slabo!");
                else if (a == 1)
                    kom.setText("     Malo si bo treba še pogledat snov!");
                else if (a == 0)
                    kom.setText("     C-c-c, zelo slabo!");
                    
                frame.dispose();
                
            }
        }
    }
}