рабочий вариант отдельных процессов на разные машины

src/Repository/RepositoryServer.java

@@ -70,14 +70,18 @@ public abstract class RepositoryServer<D extends Database> {
                 System.exit(0);
                 return null;
             });
-    protected static void Print(String message) throws IOException {
+    protected static void Print(String message) {
         if (printOn) {
-            Log = new FileWriter("Log.txt", true);
-            String dmessage = Utils.Brackets("SESSION -> ") + new Date() +
-                    " " + message;
-            System.out.println(dmessage);
-            Log.write(dmessage + "\n");
-            Log.close();
+            try {
+                Log = new FileWriter("Log.txt", true);
+                String dmessage = Utils.Brackets("SESSION -> ") + new Date() +
+                        " " + message;
+                System.out.println(dmessage);
+                Log.write(dmessage + "\n");
+                Log.close();
+            } catch (Exception ex) {
+                ex.printStackTrace();
+            }
         }
     }
     protected void checkTargets(EmailMessage message_in) {
@@ -366,7 +370,7 @@ public abstract class RepositoryServer<D extends Database> {
     }
     public void afterDeleteAction(DBObject object) throws Exception {
     }
-    public void Ping(){
+    public void Ping() {
         response = new ServerExchangeUnit_2021(ServerCode.OK);
     }
 }