Java-写入文本文件

Question

我目前有一个流编写器，它在其中从文本文件中读取诸如licenceClass，firstName，lastName，address，suburb，demeritPoints和licenceStatus之类的对象并将其显示在输出。

如何使用这些对象将其写入文本文件？

这是我目前在阅读文本文件时所拥有的

Scanner scnr = new Scanner(System.in);
driver[] drivers = new driver[100];

int i = 0, j = 0;

try {
    Scanner scan = new Scanner(new File("driver.txt"));
    while (scan.hasNextLine()) {
        String line = scan.nextLine();
        String data[] = line.split(",");
        String licenceNumber = data[0];
        String licenceClass = data[1];
        String firstName = data[2];
        String lastName = data[3];
        String address = data[4];
        String suburb = data[5];
        double demeritPoints = Double.parseDouble(data[6]);
        String licenceStatus = data[8];
        drivers[i] = new driver(licenceNumber, licenceClass, firstName, lastName, address, suburb,
                demeritPoints, licenceStatus);

        i++; j++;
    }
} catch (FileNotFoundException e) {
    System.out.println("File Not Found!");
}

Answer 1

您需要ObjectOutputStream才能将对象写入文件。请检查https://docs.oracle.com/javase/7/docs/api/java/io/ObjectOutputStream.html以获取API文档。您可以在互联网上的ObjectOutputStream上找到一些示例，例如http://tutorials.jenkov.com/java-io/objectoutputstream.html

作为提示，您只需要一个类似于以下内容的代码：

//Assuming class driver_19289670 implements Serializable
FileOutputStream fos = new FileOutputStream("drivers.ser");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(drivers);
oos.close();