Make the commandNames private

Author: HossamSaberr

src/main/java/com/mycmd/App.java

@@ -75,38 +75,38 @@ private static String resolveAliases(String input, ShellContext context) {
 
     private static final class CommandNames {
         private CommandNames() {}
-        public static final String DIR          = "dir";
-        public static final String CD           = "cd";
-        public static final String ECHO         = "echo";
-        public static final String MKDIR        = "mkdir";
-        public static final String RMDIR        = "rmdir";
-        public static final String COPY         = "copy";
-        public static final String DEL          = "del";
-        public static final String TYPE         = "type";
-        public static final String CLS          = "cls";
-        public static final String HELP         = "help";
-        public static final String EXIT         = "exit";
-        public static final String VER          = "ver";
-        public static final String TITLE        = "title";
-        public static final String COLOR        = "color";
-        public static final String HOSTNAME     = "hostname";
-        public static final String WHOAMI       = "whoami";
-        public static final String TOUCH        = "touch";
-        public static final String TIME         = "time";
-        public static final String TASKLIST     = "tasklist";
-        public static final String TREE         = "tree";
-        public static final String DATE         = "date";
-        public static final String HISTORY      = "history";
-        public static final String PING         = "ping";
-        public static final String TELNET       = "telnet";
-        public static final String PWD          = "pwd";
-        public static final String UPTIME       = "uptime";
-        public static final String CLEARHISTORY = "clearhistory";
-        public static final String IPCONFIG     = "ipconfig";
-        public static final String ALIAS        = "alias";
-        public static final String UNALIAS      = "unalias";
-        public static final String RENAME       = "rename";
-        public static final String SET          = "set";
+        private static final String DIR          = "dir";
+        private static final String CD           = "cd";
+        private static final String ECHO         = "echo";
+        private static final String MKDIR        = "mkdir";
+        private static final String RMDIR        = "rmdir";
+        private static final String COPY         = "copy";
+        private static final String DEL          = "del";
+        private static final String TYPE         = "type";
+        private static final String CLS          = "cls";
+        private static final String HELP         = "help";
+        private static final String EXIT         = "exit";
+        private static final String VER          = "ver";
+        private static final String TITLE        = "title";
+        private static final String COLOR        = "color";
+        private static final String HOSTNAME     = "hostname";
+        private static final String WHOAMI       = "whoami";
+        private static final String TOUCH        = "touch";
+        private static final String TIME         = "time";
+        private static final String TASKLIST     = "tasklist";
+        private static final String TREE         = "tree";
+        private static final String DATE         = "date";
+        private static final String HISTORY      = "history";
+        private static final String PING         = "ping";
+        private static final String TELNET       = "telnet";
+        private static final String PWD          = "pwd";
+        private static final String UPTIME       = "uptime";
+        private static final String CLEARHISTORY = "clearhistory";
+        private static final String IPCONFIG     = "ipconfig";
+        private static final String ALIAS        = "alias";
+        private static final String UNALIAS      = "unalias";
+        private static final String RENAME       = "rename";
+        private static final String SET          = "set";
     }
     private static void registerCommands(Map<String, Command> commands) {
         commands.put(CommandNames.DIR, new DirCommand());