Java ByteBuffer to String

Question

Is this a correct approach to convert ByteBuffer to String in this way,

String k = \"abcd\";
ByteBuffer b = ByteBuffer.wrap(k.getBytes());
String v = new Str         


        

Answer 1

the root of this question is how to decode bytes to string?

this can be done with the JAVA NIO CharSet:

public final CharBuffer decode(ByteBuffer bb)

FileChannel channel = FileChannel.open(
  Paths.get("files/text-latin1.txt", StandardOpenOption.READ);
ByteBuffer buffer = ByteBuffer.allocate(1024);
channel.read(buffer);

CharSet latin1 = StandardCharsets.ISO_8859_1;
CharBuffer latin1Buffer = latin1.decode(buffer);

String result = new String(latin1Buffer.array());

• First we create a channel and read it in a buffer
• Then decode method decodes a Latin1 buffer to a char buffer
• We can then put the result, for instance, in a String