Question

我正在尝试获取一个程序来读取文本文件，但即使我在项目目录中设置了potato.txt文件，它也会抛出FileNotFoundException。

import java.io.File;
import java.util.Scanner;

public static void main(String[] args) {
    String potato = "potato.txt"; // assume this line can't be changed at all

    Scanner scan = new Scanner(new File(potato)); // throws FileNotFoundException

    while (scan.hasNextLine()) {
        String line = scan.nextLine();
        System.out.println(line);
    }


}

}

Answer 1

尝试使用完整的Path，如下所示：

File file = new File("C:/temp/potato.txt"); //This is just an example path, look up your files path and put it here.
Scanner scan = new Scanner(file);

另外，完成后（在while - 循环之后）不要忘记关闭扫描仪：

scan.close();

使用Scanner读取Java文件

1 个答案: