src/clientP2P/ClientP2P.java

@@ -71,6 +71,11 @@ public class ClientP2P {
 	 * @param args	server listenning port
 	 */
 	public static void main(String [] args) {
+
+		if (args[1].equals("help") || args[1].equals("-h") || args[1].equals("h")){
+			System.out.println("usage : java -ea clientP2P.ClientP2P -- <PORT> ");
+		}
+		else{
 			ClientP2P c;
 			try {
 				c = new ClientP2P(args[1]);
@@ -124,4 +129,5 @@ public class ClientP2P {
 			t.setName("client P2P-JAVA-PROJECT");
 			t.start();
 		}
+	}
 }

src/serverP2P/ServerP2P.java

@@ -35,6 +35,11 @@ public class ServerP2P {
 	 * @param args	parameters
 	 */
 		public static void main(String [] args) {
+
+			if (args[1].equals("help") || args[1].equals("-h") || args[1].equals("h")){
+				System.out.println("usage : java -ea serveurP2P.ServeurP2P -- <serveurPORT> <trackerHOSTNAME> <trackerPORT>");
+			}
+			else{
 				ServerP2P s = new ServerP2P(args[1]);
 				ServerManagementUDP smudp = new ServerManagementUDP(s.directories.getDataHomeDirectory() + subdir, s.port, s.logger);
 				ServerManagementTCP smtcp = new ServerManagementTCP(s.directories.getDataHomeDirectory() + subdir, s.port, s.logger);
@@ -45,5 +50,6 @@ public class ServerP2P {
 				ttcp.setName("server TCP P2P-JAVA-PROJECT");
 				ttcp.start();
 			}
+	}
 
 }