public void addEngineer(String engineerName){
  if (engineerName.length() <= 0) {
    return;
  }
  engineers.add(engineerName);
  engineersTable.refresh(false);
  migrationTask.addEngineers(engineerName);
}

public void addEngineer ( String engineerName ) { if ( engineerName . length ( ) <= 0 ) { return ; } engineers . add ( engineerName ) ; engineersTable . refresh ( false ) ; migrationTask . addEngineers ( engineerName ) ; }
add the given engineername in the engineer list ( widget ) and in the model . if the name is an empty string , don ' t do anything .
