Continued:

- copyFooData() should always check if both source and target are not the same
  before continuing

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

diff --git a/src/org/mxchange/jcontacts/model/contact/Contacts.java b/src/org/mxchange/jcontacts/model/contact/Contacts.java
index b1f34d12ac2e0b9d20bb681b974a24366f67f076..02dc965a61bca6b565c4b04e3eff334857bbccea 100644 (file)
--- a/src/org/mxchange/jcontacts/model/contact/Contacts.java
+++ b/src/org/mxchange/jcontacts/model/contact/Contacts.java
@@ -79,6 +79,9 @@ public class Contacts implements Serializable {
                } else if (null == targetContact) {
                        // Throw NPE
                        throw new NullPointerException("targetContact is null"); //NOI18N
+               } else if (Objects.equals(sourceContact, targetContact)) {
+                       // Throw IAE
+                       throw new IllegalArgumentException("sourceContact and targetContact are the same."); //NOI18N
                }
 
                // Copy all: