unhandled checked exception java

unhandled_checked_exception.java

import java.io.*;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.util.List;
import java.nio.file.Paths;

public class FileReaderTest {

    public static void main(String[] args) {
        String filename = "./public/index.html";
        
        List<String> allLines = Files.readAllLines(Paths.get(filename), Charset.defaultCharset());
        for ( String i : allLines ) {
            System.out.println(i);
        }
    }
}