From 07ef8705fc27eb9713846c47aa16bc9f07b2f0e1 Mon Sep 17 00:00:00 2001
From: marko-kriskovic <150443197+marko-kriskovic@users.noreply.github.com>
Date: Sun, 12 Oct 2025 09:57:15 +0200
Subject: [PATCH] Fix null check in mapToJson method

Changed condition from 'if (map != null)' to 'if (map == null)'
to properly validate null input and throw IllegalArgumentException.

Fixes #25
---
 code/src/main/java/org/example/util/JsonMapConverter.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/code/src/main/java/org/example/util/JsonMapConverter.java b/code/src/main/java/org/example/util/JsonMapConverter.java
index 9f3fa02..a28f32b 100644
--- a/code/src/main/java/org/example/util/JsonMapConverter.java
+++ b/code/src/main/java/org/example/util/JsonMapConverter.java
@@ -37,7 +37,7 @@ public static Map<String, Object> jsonToMap(String json) {
      * @return a JSON string representation of the Map
      */
     public static String mapToJson(Map<String, Object> map) {
-        if (map != null) {
+        if (map == null) {
             throw new IllegalArgumentException("Map cannot be null");
         }