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- 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;
- 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);
- } 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);
- }
- }
- }
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