update for merging JSONObject

Author: leonardofel

pom.xml

@@ -3,7 +3,7 @@
 
     <groupId>com.github.leonardofel</groupId>
     <artifactId>json-java-put-null-fix</artifactId>
-    <version>3.0.47.unsafe</version>
+    <version>3.0.48.unsafe</version>
     <packaging>jar</packaging>
 
     <name>JSON in Java WITH WORKING .put(null)</name>

src/main/java/org/json/JSONObject.java

@@ -1832,6 +1832,27 @@ public JSONObject update(String key, Object v2) throws JSONException {
         return this;
     }
 
+    public JSONObject update(JSONObject jo) throws JSONException {
+        final AtomicBoolean changed = new AtomicBoolean(false);
+
+        jo.forEach((key, v2) -> {
+            this.compute(key, (k, v1) -> {
+                if (Objects.equals(v1, v2) && Objects.equals(v2, v1)) {
+                    return v1;
+                } else {
+                    changed.set(true);
+                    return JSONObject.NULL.equals(v2) ? JSONObject.NULL : v2;
+                }
+            });
+        });
+
+        if (changed.get()) {
+            this.updateListener.run();
+        }
+
+        return this;
+    }
+
     public JSONObject synchronize(JSONObject jo) throws JSONException {
         jo.forEach((key, v2) -> {
             this.compute(key, (k, v1) -> {