import org.eclipse.ui.IActionDelegate2; //导入依赖的package包/类
public void runWithEvent(Event event) {
	if ((event != null) && (delegate instanceof IActionDelegate2)) {
		((IActionDelegate2)delegate).runWithEvent(this, event);
	} else {
		run();
	}
}
 

import org.eclipse.ui.IActionDelegate2; //导入依赖的package包/类
/**
 * Disposes this action.
 */
public void dispose() {
    if (delegate instanceof IActionDelegate2) {
    	((IActionDelegate2)delegate).dispose();
    	delegate = null;
    }
}