- All Implemented Interfaces:
Serializable
TreePath
represents an array of objects that uniquely
identify the path to a node in a tree. The elements of the array
are ordered with the root as the first element of the array. For
example, a file on the file system is uniquely identified based on
the array of parent directories and the name of the file. The path
/tmp/foo/bar
could be represented by a TreePath
as
new TreePath(new Object[] {"tmp", "foo", "bar"})
.
TreePath
is used extensively by JTree
and related classes.
For example, JTree
represents the selection as an array of
TreePath
s. When used with JTree
, the elements of the
path are the objects returned from the TreeModel
. When JTree
is paired with DefaultTreeModel
, the elements of the
path are TreeNode
s. The following example illustrates extracting
the user object from the selection of a JTree
:
DefaultMutableTreeNode root = ...; DefaultTreeModel model = new DefaultTreeModel(root); JTree tree = new JTree(model); ... TreePath selectedPath = tree.getSelectionPath(); DefaultMutableTreeNode selectedNode = ((DefaultMutableTreeNode)selectedPath.getLastPathComponent()). getUserObject();Subclasses typically need override only
getLastPathComponent
, and getParentPath
. As JTree
internally creates TreePath
s at various points, it's
generally not useful to subclass TreePath
and use with
JTree
.
While TreePath
is serializable, a
NotSerializableException
is thrown if any elements of the path are
not serializable.
For further information and examples of using tree paths, see How to Use Trees in The Java Tutorial.
Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeans
has been added to the java.beans
package.
Please see XMLEncoder
.
-
Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
TreePath()
Creates an emptyTreePath
.Creates aTreePath
containing a single element.Creates aTreePath
from an array.protected
Creates aTreePath
from an array.protected
Creates aTreePath
with the specified parent and element. -
Method Summary