5.2. DatagramPacket Class
The DatagramPacket class represents a data packet intended for transmission using the User Datagram Protocol (see Figure 5-2). Packets are containers for a small sequence of bytes, and include addressing information such as an IP address and a port.
Figure 5-2. DatagramPacket representation of a UDP packet
The meaning of the data stored in a DatagramPacket is determined by its context. When a DatagramPacket has been read from a UDP socket, the IP address of the packet represents the address of the sender (likewise with the port number). However, when a DatagramPacket is used to send a UDP packet, the IP address stored ...
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