class ShowAccounts extends Form implements CommandListener{
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//some declarations
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          tbKecoa = new TextBox("kecoa", "", 255, TextField.ANY);
          tbKecoa.setString("Hello");

          tbKecoa.addCommand(cmExit);
          tbKecoa.addCommand(cmAdd);
          tbKecoa.addCommand(cmEdit);
          tbKecoa.addCommand(cmDelete);
          tbKecoa.addCommand(cmDeleteAll);

          append(tbKecoa);//can not find symbol

          tbKecoa.setCommandListener(this);