converting bytes to int in Java

Question

I need to convert 2 bytes (2\'s complement) into an int in Java code. how do I do it?

toInt(byte hb, byte lb)
{

}

Answer 1

You can also use the ByteBuffer class:

public int toInt(byte hb, byte lb) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[] {hb, lb});
    return bb.getShort(); // Implicitly widened to an int per JVM spec.
}

This class might be helpful if you're decoding a lot of data.