Make a High score for a game....

Question

Hello
I'm tring to use RMS code to make a highscore to game - puzzle, but i have some problems
// file 1 - Hiscore.java
import java.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.rms.*;
public class Hiscore
implements CommandListener {
private Display display;
private RecordStore rs;
private EnumList enumListScreen;
private byte[] data = new byte[200];
private ByteArrayInputStream bin = new ByteArrayInputStream(data);
private DataInputStream din = new DataInputStream(bin);
// Polecenia na soft keys w telefonie
private Command exitCommand = new Command("Wyjscie",Command.EXIT,1);
// Rekord danych
private static class Record
     String firstName;
     String lastName;
// Dane
private static final String[][] names = {
     {"Jan","Kowalski"},
     {"Jakub","Sosna"}
// stworzyc metode to pobierania imienia
// Inicjalizacja i otwarcie magazynu rekordow
public Hiscore()
//throws MIDletStateChangeException
     // Midlet wywolany poraz pierwszy
     if (display == null)
          begin();
     if (rs == null)
          openRecordStore();
private void begin()
//     display = Display.getDisplay(this);
     enumListScreen = new EnumList();
     if(openRecordStore())
          enumListScreen.addDate();
          display.setCurrent(enumListScreen);
public void exitMIDlet()
     closeRecordStore();
// dodanie rekordu do magazynu
private void addName (String first, String last,
          ByteArrayOutputStream bout,
          DataOutputStream dout)
     try{
          dout.writeUTF(first);
          dout.writeUTF(last);
          dout.flush();
          byte[] data = bout.toByteArray();
          rs.addRecord(data,0,data.length);
          bout.reset();
     catch(Exception e) {}
// Wypelnianie magazynu danymi
private void fillRecordStore()
     ByteArrayOutputStream bout = new ByteArrayOutputStream();
     DataOutputStream dout = new DataOutputStream(bout);
     for (int i = 0; i < names.length; ++i)
          addName(names[0],names[i][1],bout,dout);
// Otwarcie magazynu rekordow
private boolean openRecordStore()
     try{
          if (rs!=null) closeRecordStore();
          rs = RecordStore.openRecordStore("HiScore",true);
          fillRecordStore();
          return true;
     catch(RecordStoreException e){
          return false;
private void closeRecordStore()
     if(rs!=null)
          try{
               rs.closeRecordStore();
     catch(RecordStoreException e) {}
     rs = null;
// odczytywanie recordow
private boolean readRecord(int id, Record r)
     boolean ok = false;
     r.firstName = null;
     r.lastName = null;
     if (rs != null)
          try{
               rs.getRecord(id,data,0);
               r.firstName = din.readUTF();
               r.lastName = din.readUTF();
               din.reset();
               ok = true;
          catch(Exception e) {}
     return ok;
// Obsluga polecen
public void commandAction(Command c, Displayable d)
     if (c == exitCommand)
          exitMIDlet();
     else
          display.setCurrent(enumListScreen);
// Klasa obslugi glownego okna
class EnumList extends List
     public EnumList()
          super("Magazyn Rekordow",IMPLICIT);
          addCommand(exitCommand);
          setCommandListener(Hiscore.this);
     public void addDate()
          try{
               //utworz wyliczenie uzywajac
               RecordEnumeration enum = rs.enumerateRecords(null,null,false);
               Record r = new Record();
               //odczytywanie rekordow i wypelnianie listy danymi
               while(enum.hasNextElement())
                    int id = enum.nextRecordId();
                    if (readRecord(id,r))
                         append(r.lastName+", "+r.firstName,null);
          enum.destroy();
          catch(RecordStoreException e) {}
// File 2 - Puzzle.java
import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.*;
public class Puzzle extends MIDlet
implements CommandListener,ItemCommandListener {
    private Command exitCommand = new Command("Wyjscie", Command.EXIT, 1);
    private final static Command CMD_PRESS = new Command("Gram", Command.ITEM, 1);
    private Form mainForm;
    Board b;
    String zasady = "Rulles.\n";
    TextField imie = new TextField("Podaj imie:", "", 15, TextField.ANY);
    public static String name;
    public Puzzle() {
         mainForm = new Form("Puzzle");
    public void startApp()
            mainForm.setTitle("Puzzle");
            mainForm.append(zasady);
            StringItem item = new StringItem("Gram","", Item.BUTTON);
            item.setDefaultCommand(CMD_PRESS);
            item.setItemCommandListener(this);
            mainForm.append(imie);
            mainForm.append(item);
            //Hiscore.EnumList();
            mainForm.addCommand(exitCommand);
            mainForm.setCommandListener(this);
            name=imie.getString();
            mainForm.append(name);
            Display.getDisplay(this).setCurrent(mainForm);
    public void commandAction(Command c, Displayable s) {
         destroyApp(false);
         notifyDestroyed();
    public void commandAction(Command c, Item item) {
         b = new Board(this);
         Display.getDisplay(this).setCurrent(b);
    protected void destroyApp(boolean unconditional) {
    protected void pauseApp() {
} I want to launch Hiscore after winning game (name and time of winnig) but i can't (don't know what i'm doing wrong) lanuch it. Durring of testing I make a hiscore on beging but later it will be at the end of game after winnig.
What are my mistekes. Why I can't launch it?
Does anybody make a simple Hiscore, using RMS?

Answer 1

Hello
I'm tring to use RMS code to make a highscore to game - puzzle, but i have some problems
// file 1 - Hiscore.java
import java.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.rms.*;
public class Hiscore
implements CommandListener {
private Display display;
private RecordStore rs;
private EnumList enumListScreen;
private byte[] data = new byte[200];
private ByteArrayInputStream bin = new ByteArrayInputStream(data);
private DataInputStream din = new DataInputStream(bin);
// Polecenia na soft keys w telefonie
private Command exitCommand = new Command("Wyjscie",Command.EXIT,1);
// Rekord danych
private static class Record
     String firstName;
     String lastName;
// Dane
private static final String[][] names = {
     {"Jan","Kowalski"},
     {"Jakub","Sosna"}
// stworzyc metode to pobierania imienia
// Inicjalizacja i otwarcie magazynu rekordow
public Hiscore()
//throws MIDletStateChangeException
     // Midlet wywolany poraz pierwszy
     if (display == null)
          begin();
     if (rs == null)
          openRecordStore();
private void begin()
//     display = Display.getDisplay(this);
     enumListScreen = new EnumList();
     if(openRecordStore())
          enumListScreen.addDate();
          display.setCurrent(enumListScreen);
public void exitMIDlet()
     closeRecordStore();
// dodanie rekordu do magazynu
private void addName (String first, String last,
          ByteArrayOutputStream bout,
          DataOutputStream dout)
     try{
          dout.writeUTF(first);
          dout.writeUTF(last);
          dout.flush();
          byte[] data = bout.toByteArray();
          rs.addRecord(data,0,data.length);
          bout.reset();
     catch(Exception e) {}
// Wypelnianie magazynu danymi
private void fillRecordStore()
     ByteArrayOutputStream bout = new ByteArrayOutputStream();
     DataOutputStream dout = new DataOutputStream(bout);
     for (int i = 0; i < names.length; ++i)
          addName(names[0],names[i][1],bout,dout);
// Otwarcie magazynu rekordow
private boolean openRecordStore()
     try{
          if (rs!=null) closeRecordStore();
          rs = RecordStore.openRecordStore("HiScore",true);
          fillRecordStore();
          return true;
     catch(RecordStoreException e){
          return false;
private void closeRecordStore()
     if(rs!=null)
          try{
               rs.closeRecordStore();
     catch(RecordStoreException e) {}
     rs = null;
// odczytywanie recordow
private boolean readRecord(int id, Record r)
     boolean ok = false;
     r.firstName = null;
     r.lastName = null;
     if (rs != null)
          try{
               rs.getRecord(id,data,0);
               r.firstName = din.readUTF();
               r.lastName = din.readUTF();
               din.reset();
               ok = true;
          catch(Exception e) {}
     return ok;
// Obsluga polecen
public void commandAction(Command c, Displayable d)
     if (c == exitCommand)
          exitMIDlet();
     else
          display.setCurrent(enumListScreen);
// Klasa obslugi glownego okna
class EnumList extends List
     public EnumList()
          super("Magazyn Rekordow",IMPLICIT);
          addCommand(exitCommand);
          setCommandListener(Hiscore.this);
     public void addDate()
          try{
               //utworz wyliczenie uzywajac
               RecordEnumeration enum = rs.enumerateRecords(null,null,false);
               Record r = new Record();
               //odczytywanie rekordow i wypelnianie listy danymi
               while(enum.hasNextElement())
                    int id = enum.nextRecordId();
                    if (readRecord(id,r))
                         append(r.lastName+", "+r.firstName,null);
          enum.destroy();
          catch(RecordStoreException e) {}
// File 2 - Puzzle.java
import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.*;
public class Puzzle extends MIDlet
implements CommandListener,ItemCommandListener {
    private Command exitCommand = new Command("Wyjscie", Command.EXIT, 1);
    private final static Command CMD_PRESS = new Command("Gram", Command.ITEM, 1);
    private Form mainForm;
    Board b;
    String zasady = "Rulles.\n";
    TextField imie = new TextField("Podaj imie:", "", 15, TextField.ANY);
    public static String name;
    public Puzzle() {
         mainForm = new Form("Puzzle");
    public void startApp()
            mainForm.setTitle("Puzzle");
            mainForm.append(zasady);
            StringItem item = new StringItem("Gram","", Item.BUTTON);
            item.setDefaultCommand(CMD_PRESS);
            item.setItemCommandListener(this);
            mainForm.append(imie);
            mainForm.append(item);
            //Hiscore.EnumList();
            mainForm.addCommand(exitCommand);
            mainForm.setCommandListener(this);
            name=imie.getString();
            mainForm.append(name);
            Display.getDisplay(this).setCurrent(mainForm);
    public void commandAction(Command c, Displayable s) {
         destroyApp(false);
         notifyDestroyed();
    public void commandAction(Command c, Item item) {
         b = new Board(this);
         Display.getDisplay(this).setCurrent(b);
    protected void destroyApp(boolean unconditional) {
    protected void pauseApp() {
} I want to launch Hiscore after winning game (name and time of winnig) but i can't (don't know what i'm doing wrong) lanuch it. Durring of testing I make a hiscore on beging but later it will be at the end of game after winnig.
What are my mistekes. Why I can't launch it?
Does anybody make a simple Hiscore, using RMS?