public void cerrarArchivo(){
        try{            
            if( bufferOut!=null )   this.bufferOut.close();
            if( fileOut!=null )     this.fileOut.close();            
                        
            if( printIn!=null )     this.printIn.close();
            if( bufferIn!=null )    this.bufferIn.close();
            if( fileIn!=null )      this.fileIn.close();
        }
        catch(Exception e){
            e.printStackTrace();
        } 
    }