java file reader utf 8

In Java, you can use the InputStreamReader class from the java.io package to read a file as UTF-8 encoded characters. The InputStreamReader class is a bridge from byte streams to character streams, and it reads bytes and decodes them into characters using a specified character set.

Here's an example of how to use the InputStreamReader class to read a file as UTF-8 encoded characters in Java:

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {
        String fileName = "path/to/file.txt";
        try (BufferedReader reader = new BufferedReader(
                new InputStreamReader(new FileInputStream(fileName), "UTF-8"))) {
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

In this example, a BufferedReader is created with an InputStreamReader as input. The InputStreamReader is created with a FileInputStream and the character set "UTF-8". The BufferedReader is then used to read lines from the file, and each line is printed to the console.

This code will read the file as UTF-8 encoded characters and print the contents to the console. You can use the InputStreamReader class to read a file as UTF-8 encoded characters in Java.