Fórum Como salvar um arraylist em arquivo (DATALOG) #588724

//import java.awt.Font;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import jssc.SerialPort;
import static jssc.SerialPort.MASK_RXCHAR;
import jssc.SerialPortEvent;
import jssc.SerialPortException;
import jssc.SerialPortList;
import javafx.scene.text.Font;
import javafx.scene.text.TextAlignment;
////

public class  Temp_Uno extends Application {
    
    SerialPort arduinoPort = null;
    ObservableList<String> portList;
    
    Label labelValue;

    private void detectPort(){
       
        portList = FXCollections.observableArrayList();
 
        String[] serialPortNames = SerialPortList.getPortNames();
        for(String name: serialPortNames){
            System.out.println(name);
            portList.add(name);
        }
    }
    
    @Override
    public void start(Stage primaryStage) {
        
        labelValue = new Label();
        labelValue.setFont(new Font("Arial", 100));
        labelValue.setTextFill(Color.web("#00008B"));
        labelValue.setTextAlignment(TextAlignment.JUSTIFY);

        detectPort();
        final ComboBox comboBoxPorts = new ComboBox(portList);
        comboBoxPorts.valueProperty()
                .addListener(new ChangeListener<String>() {

            @Override
            public void changed(ObservableValue<? extends String> observable, 
                    String oldValue, String newValue) {

                System.out.println(newValue);
                disconnectArduino();
                connectArduino(newValue);
            }

        });
        
        VBox vBox = new VBox();
        vBox.getChildren().addAll(
                comboBoxPorts, labelValue);
        
        StackPane root = new StackPane();
        root.getChildren().add(vBox);
        
        Scene scene = new Scene(root, 500, 250);
        
        primaryStage.setTitle("Selecione a Porta onde se encontra o Arduino");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public boolean connectArduino(String port){
        
        System.out.println("Conectado ao Arduino");
        Path destino = Paths.get("d:\\\\temperatura.txt");
        ArrayList lista = new ArrayList(); //array para armazenar valores recebidos da serial


boolean success = false;
        SerialPort serialPort = new SerialPort(port);
        try {
            serialPort.openPort();
            serialPort.setParams(
                    SerialPort.BAUDRATE_9600,
                    SerialPort.DATABITS_8,
                    SerialPort.STOPBITS_1,
                    SerialPort.PARITY_NONE);
            serialPort.setEventsMask(MASK_RXCHAR);
            serialPort.addEventListener((SerialPortEvent serialPortEvent) -> {
                if(serialPortEvent.isRXCHAR()){
                    try {
                        String st = serialPort.readString(serialPortEvent
                                .getEventValue());
                        System.out.println("Temperatura Atual => : " + st);
                        lista.add (st);
                        for (int i = 0; i < lista.size(); i++) {
                            System.err.println("Imprimindo Indice "+i);
                            System.err.println("Imprimindo Lista " + lista.get(i));
//                            Files.list(destino, lista.get(i));
                         }
                         
            
                        
                        
               
                        
//                        Writer arq = null;
//                        PrintWriter gravarArq = new PrintWriter(arq);
//                        gravarArq.printf(st);
//                        arq.close();

//                        String valor = st;
//                        byte[] valorbyte = valor.getBytes();
//                        try {
//                            Files.write(destino, valorbyte);
//                        } catch (IOException ex) {
//                            Logger.getLogger(JavaFX_jssc_Uno.class.getName()).log(Level.SEVERE, null, ex);
//                        }
                     
                          //Update label in ui thread
                        Platform.runLater(() -> {
                            labelValue.setText(st);
                        
                        });
                     

                    } catch (SerialPortException ex) {
                        Logger.getLogger(JavaFX_jssc_Uno.class.getName())
                                .log(Level.SEVERE, null, ex);
                    }
                }
            });
            
            arduinoPort = serialPort;
            success = true;
        } catch (SerialPortException ex) {
            Logger.getLogger(JavaFX_jssc_Uno.class.getName())
                    .log(Level.SEVERE, null, ex);
            System.out.println("Erro ao conectar Serial do Arduino: " + ex.toString());
        }

        return success;
    }
        
    public void disconnectArduino(){
        
        System.out.println("Arduino desconectado");
        if(arduinoPort != null){
            try {
                arduinoPort.removeEventListener();
                
                if(arduinoPort.isOpened()){
                    arduinoPort.closePort();
                }
                
            } catch (SerialPortException ex) {
                Logger.getLogger(JavaFX_jssc_Uno.class.getName())
                        .log(Level.SEVERE, null, ex);
            }
        }
    }

    @Override
    public void stop() throws Exception {
        disconnectArduino();
        super.stop();
    }
            
    public static void main(String[] args) {
        launch(args);
    }
    
}