From efbf5ad6c8a8775fbe704695a13b378e97ced5d7 Mon Sep 17 00:00:00 2001
From: Alena Bandarovich <alena.bandarovich@informatik.hs-fulda.de>
Date: Wed, 7 Feb 2024 19:27:57 +0100
Subject: [PATCH] Check connection to server before closing

---
 src/main/java/ChatClient.java | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/main/java/ChatClient.java b/src/main/java/ChatClient.java
index 93731f3..851ef84 100644
--- a/src/main/java/ChatClient.java
+++ b/src/main/java/ChatClient.java
@@ -61,10 +61,12 @@ public class ChatClient extends JFrame implements KeyListener {
         } catch (IOException e) {
             JOptionPane.showMessageDialog(null, "Verbindung zum Server \"" + address + "\" fehlgeschlagen.");
         } finally {
-            try {
-                connectionToServer.close();
-            } catch (IOException e) {
-                e.printStackTrace();
+            if (null != connectionToServer) {
+                try {
+                    connectionToServer.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
             }
 
             try {