Convert Reader to InputStream (and Back) in Java
Convert a Reader to InputStream in Java with a String, OutputStreamWriter or Commons IO ReaderInputStream, and back with InputStreamReader and a charset.
Java InputStreamReader: Decode Bytes to Text With a Charset
Java InputStreamReader decodes bytes from an InputStream into characters. Learn charsets, read methods, malformed input, closing rules and alternatives.
Java FileReader: Constructors, Charset and Examples
Learn the Java FileReader class with UTF-8 charset constructors, char[] and line reading, error handling and when to use Files.newBufferedReader instead.
Java BufferedReader: readLine(), lines() and LineNumberReader
Java BufferedReader examples for readLine(), lines(), mark and reset, buffer size and console input, plus LineNumberReader for line numbers in errors.
