X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2Forg%2Fmxchange%2Fjcontacts%2Fmodel%2Fcontact%2Ftitle%2FPersonalTitle.java;h=36d30f3fbbd761009a8ebc8b62a14b70009dbbe6;hb=7df4118c9b2349af841c0d43d96fa1400084c7d4;hp=8b093e72dd1e7c93660aa90ed87ed6adfb966962;hpb=7e6d77d5868c8d5fa5a38f109698654a51383182;p=jcontacts-core.git

diff --git a/src/org/mxchange/jcontacts/model/contact/title/PersonalTitle.java b/src/org/mxchange/jcontacts/model/contact/title/PersonalTitle.java
index 8b093e7..36d30f3 100644
--- a/src/org/mxchange/jcontacts/model/contact/title/PersonalTitle.java
+++ b/src/org/mxchange/jcontacts/model/contact/title/PersonalTitle.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016, 2017 Free Software Foundation
+ * Copyright (C) 2016 - 2020 Free Software Foundation
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -53,6 +53,15 @@ public enum PersonalTitle implements Serializable {
 	 * @param messageKey Message key for resource file
 	 */
 	private PersonalTitle (final char accessChar, final String messageKey) {
+		// Validate parameter
+		if (null == messageKey) {
+			// Throw NPE
+			throw new NullPointerException("messageKey is null"); //NOI18N
+		} else if (messageKey.isEmpty()) {
+			// Throw IAE
+			throw new IllegalArgumentException("messageKey is empty"); //NOI18N
+		}
+
 		// Set both
 		this.accessChar = accessChar;
 		this.messageKey = messageKey;