/* sets or hides fields depending on which tab is shown */ public void setVisibleComponents(nonHumanMgt.SelType sType) { boolean catTab = (sType == nonHumanMgt.SelType.category); // these only appear on the resources tab cbbCategory.setVisible(!catTab); lblSubCategory.setVisible(!catTab); cbbSubCategory.setVisible(!catTab); // these only appear on the categories tab lblMembers.setVisible(catTab); cbbMembers.setVisible(catTab); lbxSubCatItems.setVisible(catTab); btnAddSubCat.setVisible(catTab); btnRemoveSubCat.setVisible(catTab); // nullify lists if (catTab) { cbbCategory.setItems(null); cbbSubCategory.setItems(null); } else lbxSubCatItems.setItems(null); }