improved comment quality

src/main/java/net/szum123321/textile_backup/core/Cleanup.java

@@ -50,7 +50,7 @@ public class Cleanup {
 			final long now = LocalDateTime.now().toEpochSecond(ZoneOffset.UTC);
 
 			deletedFiles += RestoreableFile.applyOnFiles(root, 0L,
-					e -> log.error("An exception occurred while trying to delete an old files!", e),
+					e -> log.error("An exception occurred while trying to delete old files!", e),
 					stream -> stream.filter(f -> now - f.getCreationTime().toEpochSecond(ZoneOffset.UTC) > config.get().maxAge)
 							.filter(f -> deleteFile(f.getFile(), ctx))
 							.count()

src/main/java/net/szum123321/textile_backup/core/create/BackupScheduler.java

@@ -27,12 +27,13 @@ import java.time.Instant;
 
 /**
  * Runs backup on a preset interval
- * <br>
+ * <br><br>
  * The important thing to note: <br>
- * In the case that <code>doBackupsOnEmptyServer == false</code> and there have been made backups with players online,
- * then everyone left the backup that was scheduled with player is still going to run. So it might appear as though there
- * has been made backup with no players online despite the config. This is the expected behaviour
- * <br>
+ * The decision of whether to do a backup or not is made at the time of scheduling, that is, whenever the <code>nextBackup</code>
+ * flag is set. This means that even if doBackupsOnEmptyServer=false, the backup that was scheduled with players online will
+ * still go thorough. <br>
+ * It might appear as though there has been made a backup with no players online despite the config. This is the expected behaviour
+ * <br><br>
  * Furthermore, it uses system time
  */
 public class BackupScheduler {
@@ -73,7 +74,7 @@ public class BackupScheduler {
         } else if(!config.get().doBackupsOnEmptyServer && server.getPlayerManager().getCurrentPlayerCount() == 0) {
             //Do the final backup. No one's on-line and doBackupsOnEmptyServer == false
             if(scheduled && nextBackup <= now) {
-                //Verify we hadn't done the final one and its time to do so
+                //Verify we hadn't done the final one, and it's time to do so
                 Globals.INSTANCE.getQueueExecutor().submit(
                         MakeBackupRunnableFactory.create(
                                 BackupContext.Builder

src/main/java/net/szum123321/textile_backup/core/restore/RestoreHelper.java

@@ -41,7 +41,7 @@ public class RestoreHelper {
 
         Optional<RestoreableFile> optionalFile =
                 RestoreableFile.applyOnFiles(root, Optional.empty(),
-                        e -> log.error("An error occurred while trying to lock file!", e),
+                        e -> log.error("An exception occurred while trying to lock the file!", e),
                         s -> s.filter(rf -> rf.getCreationTime().equals(backupTime))
                                 .findFirst());