如何将InputStream.read（）转换为double？

Question

Is there a simple way to convert arrays of bytes read from stream to a double values?

InputStream input = serialPort.getInputStream();
while(true) {
  byte[] buffer = new byte[ 8 ];
  len = input.read( buffer );
}

buffer => double ?

Can you explain me figuratively how InputStream.read(byte[] b) works?

Answer 1

If you do such operations a lot, maybe it is better to use DataInputStream , which provides a set of operations, like readDouble and so on.

DataInputStream input = new DataInputStream(serialPort.getInputStream());
double d = input.readDouble();

Answer 2

InputStream.read(byte[] b) will read the next bytes into b argument.

And, you can try using DataInputStream to read Double, Float, Integer, and others. You can instantiate a DataInputStream using:

DataInputStream input = new DataInputStream(YOUR_INPUT_STREAM);

Answer 3

尝试使用DataInputStream（ javadoc ）包装InputStream对象，并使用readDouble方法