From: Roland Häder <roland@mxchange.org>
Date: Fri, 24 Apr 2020 14:53:03 +0000 (+0200)
Subject: Continued:
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=a3b3020e5fc79a4e685c35389e966a7f8927243a;p=juser-core.git

Continued:
- copyFooData() shall check if both source and target are not the same

Signed-off-by: Roland Häder <roland@mxchange.org>
---

diff --git a/src/org/mxchange/jusercore/model/user/Users.java b/src/org/mxchange/jusercore/model/user/Users.java
index d2b90aa..7a3a5cf 100644
--- a/src/org/mxchange/jusercore/model/user/Users.java
+++ b/src/org/mxchange/jusercore/model/user/Users.java
@@ -86,8 +86,8 @@ public class Users implements Serializable {
 	}
 
 	/**
-	 * Compares both user instances. This method returns -1 if second
-	 * instance is null.
+	 * Compares both user instances. This method returns -1 if second instance
+	 * is null.
 	 * <p>
 	 * @param user1 User instance 1
 	 * @param user2 User instance 2
@@ -125,6 +125,9 @@ public class Users implements Serializable {
 		} else if (null == targetUser) {
 			// Throw NPE
 			throw new NullPointerException("targetUser is null"); //NOI18N
+		} else if (Objects.equals(sourceUser, targetUser)) {
+			// Is exactly the same!
+			throw new IllegalArgumentException("sourcerUser and targetUser are the same."); //NOI18N
 		}
 
 		// Is contact set?
@@ -274,7 +277,7 @@ public class Users implements Serializable {
 	/**
 	 * Returns a formatted string from given user's locale and Date instance
 	 * <p>
-	 * @param user     User instance
+	 * @param user User instance
 	 * @param date Date instance
 	 * <p>
 	 * @return A formatted string from Date instance