Added application end date in DemoApplication.java

src/main/java/com/example/demo/DemoApplication.java

@@ -12,6 +12,7 @@ public class DemoApplication {
 		System.out.println("Start application from gitea.cs.pollub.pl");
         System.out.println(new Date());
         SpringApplication.run(DemoApplication.class, args);
+        System.out.println(new Date());
         System.out.println("End application");
     }