Character input stream and character output stream

import java.io.*;

public class TestDamo {
    public static void main(String[] args) {
        try {
            // Character output stream 
            Writer writer=new FileWriter("");
            writer.write(" One ");// Write a character 
            byte[] bytes=" Hello ".getBytes();
            // Character input stream 
            Reader reader=new FileReader("");
            reader.read();// Read a character 
            File f=new File("");
            byte[]bytes1=new byte[(int)f.length()];// Get all characters 
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Similar to byte stream .