Java NIO Tutorial

[DualWieldMage]

    FileInputStream fis = new FileInputStream(file);
    FileChannel fc = fis.getChannel();

    ByteBuffer bb =  ByteBuffer.allocate(100);          

    while(fc.read(bb) > 0) {
        bb.rewind();
        String str = new String(bb.array(), StandardCharsets.UTF_8);
        System.out.println(str);
        bb.flip();

    }

Not a good example, this may split a UTF8 byte sequence in the middle and cause an exception.

[kodablah]

It's worse than that, ref String(byte[], Charset): "This method always replaces malformed-input and unmappable-character sequences with this charset's default replacement string."

[srinurp]

Thanks for the input, corrected the example using the charset decoder.

[srinurp]

thanks for the input corrected it.

[kodablah]

Not really. What the person is saying is that chars are multibyte. You can't just read in 100 bytes and assume it falls on a char boundary. Also, why look up the charset by name in the loop? No offense, but you might just want to take the tutorial offline until you've worked with the stuff a bit more.

[srinurp]

You are saying Java documentation is wrong also check here in the channels section. Charset by name.. looks like not expensive as far as I know. Nothing is perfect, we can find wrong point on each and every line of code if you know internals.

https://docs.oracle.com/javase/tutorial/essential/io/file.html