Java ByteBuffer get and set double type data

import java.nio.ByteBuffer;

public class Main {
  public static void main(String[] argv) throws Exception {
    ByteBuffer buf = ByteBuffer.allocate(100);

    // Put values of different types
    buf.putDouble(12.3D);//from  w  w  w .  ja  v a2 s .c om

    // Reset position for reading
    buf.flip();

    // Retrieve the values
    double d = buf.getDouble();
    
    System.out.println(d);

  }
}