src/java.desktop/macosx/classes/sun/java2d/opengl/CGLSurfaceData.java

rev 54883 : JDK-8220154 Improve java2d rendering performance on macOS by using Metal framework

@@ -247,11 +247,11 @@
         public SurfaceData getReplacement() {
             return layer.getSurfaceData();
         }
 
         @Override
-        boolean isOnScreen() {
+        public boolean isOnScreen() {
             return true;
         }
 
         @Override
         public Rectangle getBounds() {