Bug 90415 [Contributions] NPE in ActionContributionItem.update when trying to set accelerator in menu
Exception in thread "main" java.lang.NullPointerException at org.eclipse.jface.action.ActionContributionItem.update(ActionContributionItem.java:749) at org.eclipse.jface.action.ActionContributionItem.fill(ActionContributionItem.java:281) at org.eclipse.jface.action.MenuManager.update(MenuManager.java:627) at org.eclipse.jface.action.MenuManager.update(MenuManager.java:549) at org.eclipse.jface.action.MenuManager.createMenuBar(MenuManager.java:158) at org.eclipse.jface.window.ApplicationWindow.createTrimWidgets(ApplicationWindow.java:332) at org.eclipse.jface.window.ApplicationWindow.configureShell(ApplicationWindow.java:320) at org.eclipse.jface.window.Window.createShell(Window.java:483) at org.eclipse.jface.window.Window.create(Window.java:417) at org.eclipse.jface.window.Window.open(Window.java:770) at MenuActionTest.main(MenuActionTest.java:76)
bundles/org.eclipse.jface/src/org/eclipse/jface/action/ActionContributionItem.java
if (image == null && forceImage) {
                image = ImageDescriptor.getMissingImageDescriptor();
            }
            
            
            LocalResourceManager localManager = new LocalResourceManager(parentResourceManager);
            
            if (widget instanceof Item) {
                ((Item) widget).setImage(image == null ? null : localManager.createImageWithDefault(image));
            } else if (widget instanceof Button) {
                ((Button) widget).setImage(image == null ? null : localManager.createImageWithDefault(image));
            }
            
            
            disposeOldImages();
            imageManager = localManager;
            
            return image != null;
        }
        return false;
    }
    /**
     * Dispose any images allocated for this contribution item
     */
    private void disposeOldImages() {
        if (imageManager != null) {
            imageManager.dispose();
            imageManager = null;
        }