RecordStore within choicegroup

Question

how to make a RecordStore within choicegroup?
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.rms.*;
import java.io.*;
public class RMSDemo extends MIDlet implements CommandListener {
private Display display;
private RecordStore rs=null;
private Command exit,add,delete, show;
private RecordEnumeration re;
private int recordNO;
Form frm;
int index=0;
public RMSDemo() {
display = Display.getDisplay(this);
//Create a RMS
try {
rs= RecordStore.openRecordStore("myRecord",false);
rs.closeRecordStore();
} catch(Exception e) {
System.out.println(e);
public void startApp() {
frm=new Form("RMSDemo");
exit= new Command("Exit",Command.EXIT,1);
frm.addCommand(exit);
add= new Command("Add",Command.SCREN,1);
frm.addCommand(add);
delete= new Command("Delete",Command.SCREEN,2);
frm.addCommand(delete);
show= new Command("SHOW",Command.SCREEN ,3);
frm.addCommand(show);
frm.setCommandListener(this);
frm.append("#####");
display.setCurrent(frm);
public void pauseApp() {
public void destroyApp(boolean un) {
// Handling commands
public void commandAction(Command cmd,Displayable d) {
if(cmd==add) {
addRecord();
} else
if(cmd==delete) {
removeRecord();
} else
if(cmd==show) {
try {
byte b[]= rs.getRecord(recordNO);
String s= new String(b);
frm.append(s);
cg_sexo = new ChoiceGroup("Sexo.: ",ChoiceGroup.POPUP,s,null);
} catch(Exception e) {}
void addRecord() {
try {
rs= RecordStore.openRecordStore("myRecord",false);
index++;
byte b[]=("Record NO "+index).getBytes();
//Adding record to record store
rs.addRecord(b,0,b.length);
rs.closeRecordStore() ;
} catch(Exception e) {
System.out.println(e);
// Deleting a record
void removeRecord(int recordID) {
try {
rs= RecordStore.openRecordStore("myRecord",false);
rs.deleteRecord(recordID);
index--;
rs.closeRecordStore();
} catch(Exception e) {
System.out.println(e);
Edited by: 876788 on 05-oct-2011 21:37

Answer 1

Hi, first of all, I'd like to recommend you a package called Floggy instead of working with RMS directly, they also have great support on their forums.
Secondly, why not simply create a new class and implement Persistable (if you'll choose Floggy later)?