avoid empty strings when figuring out display name

1 files changed, 4 insertions, 4 deletions

diff --git a/src/main/java/de/pixart/messenger/entities/Contact.java b/src/main/java/de/pixart/messenger/entities/Contact.java
index 8079ff2db..9681e69bc 100644
--- a/src/main/java/de/pixart/messenger/entities/Contact.java
+++ b/src/main/java/de/pixart/messenger/entities/Contact.java
@@ -112,13 +112,13 @@ public class Contact implements ListItem, Blockable {
     }
 
     public String getDisplayName() {
-        if (this.commonName != null && Config.X509_VERIFICATION) {
+        if (Config.X509_VERIFICATION && this.commonName != null && !this.commonName.isEmpty()) {
             return this.commonName;
-        } else if (this.systemName != null) {
+        } else if (this.systemName != null && !this.systemName.isEmpty()) {
             return this.systemName;
-        } else if (this.serverName != null) {
+        } else if (this.serverName != null && !this.serverName.isEmpty()) {
             return this.serverName;
-        } else if (this.presenceName != null && mutualPresenceSubscription()) {
+        } else if (this.presenceName != null && !this.presenceName.isEmpty() && mutualPresenceSubscription()) {
             return this.presenceName;
         } else if (jid.hasLocalpart()) {
             return jid.getUnescapedLocalpart();