What is the difference between reader and inputstream

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What is finally block in Java? What is difference between final, finally and finalize? What is try-with-resources in java? What is a stacktrace? What is the meaning of immutable in terms of String? Reader classes uses character encoding to decode bytes and return characters to caller. Reader can either use default character encoding of platform on which your Java program is running or accept a Charset object or name of character encoding in String format e.

Despite being one of the simplest concept, lots of Java developers make mistakes of not specifying character encoding, while reading text files or text data from socket. Remember, if you don't specify correct encoding, or your program is not using character encoding already present in protocol e. Some characters which are not present in default encoding, may come up as? Once you know this fundamental difference between stream and reader , understanding difference between FileInputStream and FileReader is quite easy.

Both allows you to read data from File , but FileInputStream is used to read binary data, while FileReader is used to read character data. This is similar to FileInputStream, which also provides similar constructors for reading from file source.

Though its advised to use BufferedReader to read data from file. On the other hand, in example 2 are reading data character by character. This is why you see exactly same text as written in file output from our example 2. Share to Twitter Share to Facebook.

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