用Scanner读文本文件内容

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

class Demo
{

    public static void main(String[] args)
    throws Exception
    {
        Scanner sc = new Scanner(new File("d:\abc.txt"));
        System.out.println("文件内容如下：");
        while (sc.hasNextLine())
        {
            System.out.println(sc.nextLine());
        }
    }

}