simplified cli usage of tracker

src/tracker/Tracker.java

@@ -19,7 +19,6 @@ public class Tracker {
 	private int port;
 	private Directories directories;
 	private Logger logger;
-	private static final int defaultPort = 6969;
 
 	/** Constructor with portStr containing a port number.
 	 * @param portStr	String containing port number of listening.
@@ -36,34 +35,48 @@ public class Tracker {
 
 	/** Main program entry point
 	 * first parameter is port number and is mandatory
-	 * to test, run with: java -ea serverP2P.ServerP2P -- <portNumber>
+	 * to test, run with: java -ea serverP2P.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 tracker.Tracker or java trackerP2P.trackerP2P -- <PORT> (default localhost:6969, range 6000 -> 6999)");
+			final String defaultPort = "6969";
+			final String defaultHostname = "localhost";
+			Scanner scanner = new Scanner(System.in);
+			Tracker t;
+
+			System.out.println("Tracker Server, enter hostname to bind : ");
+			String hostname = scanner.nextLine();
+			if(hostname.equals("")){
+				hostname = defaultHostname;
+				System.out.println("using default hostname : " + hostname);
+			}	else{
+				System.out.println("using hostname : " + hostname);
+			}
+			System.out.println("enter port : ");
+			String port = scanner.nextLine();
+			if(port.equals("")){
+				port = defaultPort;
+				System.out.println("using default port : " + port);
+			} else {
+				System.out.println("using port : " + hostname);
+			}
+			TestPort testPortTracker = new TestPort();
+			if(testPortTracker.testPortTracker(Integer.parseInt(port))){
+				t = new Tracker(port);
+			}
+			else {
+				System.out.println("Wrong port (6000 -> 6999), using default port 6969");
+				t = new Tracker(defaultPort);
+				t.logger.write("Wrong port (6000 -> 6999), using default port 6969", LogLevel.Warning);
 			}
-			else{
-				Tracker t;
-				TestPort testPortTracker = new TestPort();
-				if(testPortTracker.testPortTracker(Integer.parseInt(args[1]))){
-					t = new Tracker(args[1]);
-				}
-				else {
-					System.out.println("Wrong port (6000 -> 6999), using default port 6969");
-					t = new Tracker(String.valueOf(defaultPort));
-					t.logger.write("Wrong port (6000 -> 6999), using default port 6969", LogLevel.Warning);
-				}
 
-				TrackerManagementUDP tmudp = new TrackerManagementUDP(t.port, t.logger);
-				TrackerManagementTCP tmtcp = new TrackerManagementTCP(t.port, t.logger);
-				Thread tudp = new Thread(tmudp);
-				tudp.setName("Tracker UDP P2P-JAVA-PROJECT");
-				tudp.start();
-				Thread ttcp = new Thread(tmtcp);
-				ttcp.setName("Tracker TCP P2P-JAVA-PROJECT");
-				ttcp.start();
+			TrackerManagementUDP tmudp = new TrackerManagementUDP(hostname, t.port, t.logger);
+			TrackerManagementTCP tmtcp = new TrackerManagementTCP(hostname, t.port, t.logger);
+			Thread tudp = new Thread(tmudp);
+			tudp.setName("Tracker UDP P2P-JAVA-PROJECT");
+			tudp.start();
+			Thread ttcp = new Thread(tmtcp);
+			ttcp.setName("Tracker TCP P2P-JAVA-PROJECT");
+			ttcp.start();
 		}
-	}
-
 }

src/tracker/TrackerManagementTCP.java

@@ -41,8 +41,8 @@ public class TrackerManagementTCP extends TrackerManagement {
 	 * @param port	Port used to listen.
 	 * @param logger	Logger object
 	 */
-	public TrackerManagementTCP(int port, Logger logger) {
-		super(new HostItem("localhost", port), logger);
+	public TrackerManagementTCP(String hostname, int port, Logger logger) {
+		super(new HostItem(hostname, port), logger);
 		try {
 			socket = new ServerSocket(tracker.getPort(), 10, tracker.getInetAddress());
 		} catch (SocketException e) {

src/tracker/TrackerManagementUDP.java

@@ -37,8 +37,8 @@ public class TrackerManagementUDP extends TrackerManagement {
 	 * @param port	Port used to listen.
 	 * @param logger	Logger object
 	 */
-	public TrackerManagementUDP(int port, Logger logger) {
-		super(new HostItem("localhost", port), logger);
+	public TrackerManagementUDP(String hostname, int port, Logger logger) {
+		super(new HostItem(hostname, port), logger);
 		try {
 			socket = new DatagramSocket(tracker.getPort(), tracker.getInetAddress());
 		} catch (SocketException e) {