import com.sun.hotspot.igv.coordinator.actions.ImportAction; //导入依赖的package包/类
private void initToolbar() {

        Toolbar toolbar = new Toolbar();
        Border b = (Border) UIManager.get("Nb.Editor.Toolbar.border"); //NOI18N
        toolbar.setBorder(b);
        this.add(toolbar, BorderLayout.NORTH);

        toolbar.add(ImportAction.get(ImportAction.class));
        toolbar.add(((NodeAction) RemoveAction.get(RemoveAction.class)).createContextAwareInstance(this.getLookup()));
        toolbar.add(RemoveAllAction.get(RemoveAllAction.class));

        toolbar.add(((NodeAction) SaveAsAction.get(SaveAsAction.class)).createContextAwareInstance(this.getLookup()));
        toolbar.add(SaveAllAction.get(SaveAllAction.class));

        toolbar.add(StructuredViewAction.get(StructuredViewAction.class).getToolbarPresenter());

        for (Toolbar tb : ToolbarPool.getDefault().getToolbars()) {
            tb.setVisible(false);
        }

        initOrganizers();
    }