java file input demo

import java.io.FileInputStream;  
import java.io.FileNotFoundException;  
import java.util.Scanner; 
import java.io.*;
import java.nio.file.Paths;  
import edu.princeton.cs.algs4.StdOut;  

public class test{
    
    
    public static void main(String[] args) throws IOException
    {
        Scanner scanner = new Scanner(Paths.get("a.txt"),"utf-8");
//Scanner scanner = new Scanner(Paths.get("C:\\Users\\LHM\\algs4\\code\\test\\a.txt"),"utf-8");
//Scanner scanner = new Scanner(new File("a.txt"));
             while(scanner.hasNextLine())
             {
                 String line = scanner.nextLine();
                 StdOut.println(line);
             }     
    }
}