Swing Menus and Toolbars - The Definitive Guide to Java Swing - page 198

items; the remaining methods, such as add(Component) , are inherited from Container . In addition,
you can add a separator to a toolbar.

public JButton add(Action action);
public void addSeparator();
public void addSeparator(Dimension size);

When using the add(Action) method of JToolBar , the added Action is encapsulated within
a JButton object. This is different from adding actions to JMenu or JPopupMenu components, in
which JMenuItem objects are added instead. As with JMenu and JPopupMenu , adding an Action in
this fashion is discouraged in the Javadoc for the class. For separators, if you don't specify the
size, the installed look and feel forces a default size setting.

■ Note For more information about dealing with the Action interface, see Chapter 2 or the section “Using
Action Objects with Menus” earlier in this chapter.

To remove components from a toolbar, use the following method:

public void remove(Component component)

JToolBar Properties
The JToolBar class defines nine properties, which are listed in Table 6-15.

Table 6-15. JToolBar Properties

Property Name Data Type Access

accessibleContext AccessibleContext Read-only

borderPainted boolean Read-write bound

floatable boolean Read-write bound

layout LayoutManager

Write-only

margin Insets Read-write bound

orientation int Read-write bound

rollover boolean

Read-write bound

UI ToolBarUI Read-write

UIClassID String Read-only

By default, the border of a JToolBar is painted. If you don't want the border painted, you
can set the borderPainted property to false . Without using the borderPainted property,
you would need to change the setting of the border property (inherited from the superclass
JComponent ).