J2ME消费存储统计

import java.util.*;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.rms.*;

public class TextBoxDemo extends javax.microedition.midlet.MIDlet 
    implements CommandListener {

  private Display display;

  private Form mainMenuForm;
  private Form dataForm;
  private Form recordForm;
  private Form statusForm;    
  private TextField recordStoreNameTextField;
  private TextField filterCharacterTextField;
  //private TextField recordDataTextField;
  private TextField t1 ;
  private ChoiceGroup recordStoreChoice;

  private Alert errorAlert;
  private Alert infoAlert;

  private Command cmdOK;
  private Command cmdBack;
  private Command cmdNext;
  private Command cmdPrev;
  private Command cmdDelete;
  private Command cmdModify;

  private Command cmdExit;
  private Command cmdHelp;
  double n1=0.0;
  double n2 =0.0;
  double n3=0.0;
  double n4=0.0;
  double n5=0.0;
  double n6=0.0;
  private ChoiceGroup mainMenu;
  
  private RecordStore currentRecordStore = null;
  private String currentName = "";

  private RecordEnumeration enumeration;
  private RecordFilter filter;
  private int currentRecordID;
  private byte[] recordData;
  private DateField aDateField;
  private boolean commandAvailable;
  private Command currentCommand;
  private Displayable currentDisplayable;
  private int i;
  private int state;
  int m;
  private String rr;
//private int aa=this.i;
  private static final int ST_MAIN_MENU =                          100;
  private static final int ST_GETTING_RECORD_STORE_NAME =          101;
  private static final int ST_SELECTING_STORE_NAME =               102;
  private static final int ST_SELECTING_STORE_NAMES_FOR_DELETION = 103;