8376420: Remove AppContext from javax/swing/ImageIcon.java

Reviewed-by: aivanov, psadhukhan

Author: prrace

src/java.desktop/share/classes/javax/swing/ImageIcon.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -54,7 +54,6 @@
 import javax.accessibility.AccessibleStateSet;
 
 import sun.awt.AWTAccessor;
-import sun.awt.AppContext;
 
 /**
  * An implementation of the Icon interface that paints Icons
@@ -110,18 +109,7 @@ public class ImageIcon implements Icon, Serializable, Accessible {
      * @deprecated since 1.8
      */
     @Deprecated
-    protected static final Component component = createComponent();
-
-    private static final Component createComponent() {
-        try {
-            Component component = new Component() {};
-            // 6482575 - clear the appContext field so as not to leak it
-            AWTAccessor.getComponentAccessor().setAppContext(component, null);
-            return component;
-        } catch (Throwable t) {
-            return null;
-        }
-    }
+    protected static final Component component = new Component() {};
 
     /**
      * Do not use this shared media tracker, which is used to load images.
@@ -136,8 +124,6 @@ private static final Component createComponent() {
      */
     private static int mediaTrackerID;
 
-    private static final Object TRACKER_KEY = new StringBuilder("TRACKER_KEY");
-
     int width = -1;
     int height = -1;
 
@@ -346,24 +332,12 @@ private int getNextID() {
         }
     }
 
+    private static final MediaTracker MEDIA_TRACKER = new MediaTracker(new Component() {});
     /**
-     * Returns the MediaTracker for the current AppContext, creating a new
-     * MediaTracker if necessary.
+     * Returns the shared MediaTracker.
      */
     private MediaTracker getTracker() {
-        Object trackerObj;
-        AppContext ac = AppContext.getAppContext();
-        // Opt: Only synchronize if trackerObj comes back null?
-        // If null, synchronize, re-check for null, and put new tracker
-        synchronized(ac) {
-            trackerObj = ac.get(TRACKER_KEY);
-            if (trackerObj == null) {
-                Component comp = new Component() {};
-                trackerObj = new MediaTracker(comp);
-                ac.put(TRACKER_KEY, trackerObj);
-            }
-        }
-        return (MediaTracker) trackerObj;
+        return MEDIA_TRACKER;
     }
 
     /**