![]() ![]() Use the render component returned by the ListCellRenderer to paint the clipping area for the elementĪ CheckboxListCellRenderer implementationĪs explaint in the “Swing renderers” section above we can customize the way a JList element is rendered by implementing a ListCellRenderer.Ask the ListCellRenderer to return a Component that can draw the element.A JList uses a renderer to draw each element that the list’s model contains.įor a JList these process can be described in this way: For this purpose java swing introduced the renderers.Ī renderer in swing is used to create a swing component that is responsible for drawing one element of a collection component like JList. Therefore these swing components must know how to arrange the elements and how to draw each element. ![]() Swing renderersĪ lot of components in swing are used to display data structures that are made up of multiple elements, e.g. A “normal” JList will highlight selected elements by changing the background of the selected elements, but in the blog’S example the checkboxes renderer will use checkboxes to show the selection state.īefore we can start to implement a custom ListCellRenderer we must understand what renderers in swing are and how they are used by swing components to render their content. Java swing components can be extended in various ways. This blog shows how to implement a custom renderer for a JList that uses checkboxes in front of each list element. ![]()
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