// Normally
private static void readFile1(File fin) throws IOException {
	FileInputStream fis = new FileInputStream(fin);
 
	//Construct BufferedReader from InputStreamReader
	BufferedReader br = new BufferedReader(new InputStreamReader(fis));
 
	String line = null;
	while ((line = br.readLine()) != null) {
		System.out.println(line);
	}
 
	br.close();
}
// With specified charset
Charset charset = Charset.forName("US-ASCII");
try (BufferedReader reader = Files.newBufferedReader(file, charset)) {
    String line = null;
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
} catch (IOException x) {
    System.err.format("IOException: %s%n", x);
}
The newBufferedReader method does the following:

public static BufferedReader newBufferedReader(Path path, Charset cs){
 CharsetDecoder decoder = cs.newDecoder();
 Reader reader = new InputStreamReader(newInputStream(path), decoder);
 return new BufferedReader(reader);
}