public void initExtraButtons( final ExtendedPagedTable<ProcessInstanceSummary> extendedPagedTable) { Button newInstanceButton = new Button(); newInstanceButton.setTitle(constants.New_Instance()); newInstanceButton.setIcon(IconType.PLUS); newInstanceButton.setTitle(Constants.INSTANCE.New_Instance()); newInstanceButton.addClickHandler( new ClickHandler() { @Override public void onClick(ClickEvent event) { newProcessInstancePopup.show(); } }); extendedPagedTable.getRightActionsToolbar().add(newInstanceButton); }