Java如何解析接收到的UDP字節中的double值？

Question

int port = 18000; 
DatagramSocket serverSocket = new DatagramSocket(port); 
byte[] receiveData = new byte[8]; 

System.out.println("Server Listing on Port: "+port); 
String x; 

while (true){ 
    DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length); 
    serverSocket.receive(receivePacket); 

?? ??雙X =新Doulbe.parseBytes（recievedPacket）

Answer 1

你可以使用ByteBuffer

Double x = ByteBuffer.wrap(receiveData).getDouble(); 

Answer 2

使用java.nio.ByteBuffer

喜歡的東西：

private static ByteBuffer buffer = ByteBuffer.allocate(8);  

public static byte[] encodeDouble(double x) { 
    buffer.clear(); 
    buffer.putDouble(0, x); 
    return buffer.array(); 
} 

public static double decodeDouble(byte[] bytes) { 
    buffer.clear(); 
    buffer.put(bytes); 
    buffer.flip(); 
    return buffer.getDouble(); 
}  

Answer 3

ByteBuffer.wrap(receiveData.getData()).getDouble(); 

Answer 4

java.io.DataInputStream.readDouble()