Interface TreeNode
- All Known Subinterfaces:
MutableTreeNode
- All Known Implementing Classes:
-
AbstractDocument.AbstractElement
,AbstractDocument.BranchElement
,AbstractDocument.LeafElement
,DefaultMutableTreeNode
,DefaultStyledDocument.SectionElement
,HTMLDocument.BlockElement
,HTMLDocument.RunElement
,JTree.DynamicUtilTreeNode
public interface TreeNode
Defines the requirements for an object that can be used as a tree node in a JTree.
Implementations of TreeNode
that override equals
will typically need to override hashCode
as well. Refer to TreeModel
for more information. For further information and examples of using tree nodes, see How to Use Tree Nodes in The Java Tutorial.
Method Summary
Modifier and Type | Method | Description |
---|---|---|
Enumeration<? extends TreeNode> | children() | Returns the children of the receiver as an |
boolean | getAllowsChildren() | Returns true if the receiver allows children. |
TreeNode | getChildAt(int childIndex) | Returns the child |
int | getChildCount() | Returns the number of children |
int | getIndex(TreeNode node) | Returns the index of |
TreeNode | getParent() | Returns the parent |
boolean | isLeaf() | Returns true if the receiver is a leaf. |
Method Detail
getChildAt
TreeNode getChildAt(int childIndex)
Returns the child TreeNode
at index childIndex
.
- Parameters:
-
childIndex
- index of child - Returns:
- the child node at given index
getChildCount
int getChildCount()
Returns the number of children TreeNode
s the receiver contains.
- Returns:
- the number of children the receiver contains
getParent
TreeNode getParent()
Returns the parent TreeNode
of the receiver.
- Returns:
- the parent of the receiver
getIndex
int getIndex(TreeNode node)
Returns the index of node
in the receivers children. If the receiver does not contain node
, -1 will be returned.
- Parameters:
-
node
- node to be loked for - Returns:
- index of specified node
getAllowsChildren
boolean getAllowsChildren()
Returns true if the receiver allows children.
- Returns:
- whether the receiver allows children
isLeaf
boolean isLeaf()
Returns true if the receiver is a leaf.
- Returns:
- whether the receiver is a leaf
children
Enumeration<? extends TreeNode> children()
Returns the children of the receiver as an Enumeration
.
- Returns:
- the children of the receiver as an
Enumeration