import java.net.*; public class DatagramPacket_Length_1 { public static void main(String[] args) { byte[] buffer = new byte[5]; DatagramPacket good = null; DatagramPacket bad = null; good = new DatagramPacket(buffer, 5); try { bad = new DatagramPacket(buffer, 6); } catch (IllegalArgumentException e) { } good = new DatagramPacket(buffer, 1, 4); try { bad = new DatagramPacket(buffer, 1, 5); } catch (IllegalArgumentException e) { } } }