J2ME Data Management: Record Management System : Sort Search « J2ME « Java

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J2ME Data Management: Record Management System
J2ME Data Management: Record Management System

/*
J2ME: The Complete Reference

James Keogh

Publisher: McGraw-Hill

ISBN 0072227109

*/
//jad file (please verify the jar size)
/*
MIDlet-Name: RecordStoreExample
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: RecordStoreExample.jar
MIDlet-1: RecordStoreExample, , RecordStoreExample
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100

*/
import javax.microedition.rms.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.io.*;
public class RecordStoreExample 
            extends MIDlet implements CommandListener
{
  private Display display;
  private Alert alert;
  private Form form
  private Command exit; 
  private Command start;
  private RecordStore recordstore = null;
  private RecordEnumeration recordenumeration = null;
  public RecordStoreExample ()
  {
    display = Display.getDisplay(this);
    exit = new Command("Exit", Command.SCREEN, 1);
    start = new Command("Start", Command.SCREEN, 1);
    form new Form("Record Store");
    form.addCommand(exit);
    form.addCommand(start);
    form.setCommandListener(this);
  }
  public void startApp()
  {
    display.setCurrent(form);
  }
  public void pauseApp()
  {
  }
  public void destroyAppboolean unconditional )
  {
  }
  public void commandAction(Command command, Displayable displayable)
  {
    if (command == exit)
    {
      destroyApp(true);
      notifyDestroyed();
    }
    else if (command == start)
    {
      try
      {
        recordstore = RecordStore.openRecordStore("myRecordStore"
                                                    true );
      }
      catch (Exception error)
      {
        alert = new Alert("Error Creating", error.toString()
                           null, AlertType.WARNING)
        alert.setTimeout(Alert.FOREVER)
        display.setCurrent(alert);
      }
      try
      {
        recordstore.closeRecordStore();
      }
      catch (Exception error)
      {
        alert = new Alert("Error Closing", error.toString()
                          null, AlertType.WARNING)
        alert.setTimeout(Alert.FOREVER)
        display.setCurrent(alert);
      }
      if (RecordStore.listRecordStores() != null)
      {
        try
        {
          RecordStore.deleteRecordStore("myRecordStore");
        }
        catch (Exception error)
        {
         alert = new Alert("Error Removing", error.toString()
                           null, AlertType.WARNING)
         alert.setTimeout(Alert.FOREVER)
         display.setCurrent(alert);
        }
      }      
    }
  }     
}


           
       














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