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- 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 overrideequals
will typically need to overridehashCode
as well. Refer toTreeModel
for more information. For further information and examples of using tree nodes, see How to Use Tree Nodes in The Java Tutorial.
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Method Summary
Methods Modifier and Type Method and Description Enumeration
children()
Returns the children of the receiver as anEnumeration
.boolean
getAllowsChildren()
Returns true if the receiver allows children.TreeNode
getChildAt(int childIndex)
Returns the childTreeNode
at indexchildIndex
.int
getChildCount()
Returns the number of childrenTreeNode
s the receiver contains.int
getIndex(TreeNode node)
Returns the index ofnode
in the receivers children.TreeNode
getParent()
Returns the parentTreeNode
of the receiver.boolean
isLeaf()
Returns true if the receiver is a leaf.
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Method Detail
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getChildAt
TreeNode getChildAt(int childIndex)
Returns the childTreeNode
at indexchildIndex
.
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getChildCount
int getChildCount()
Returns the number of childrenTreeNode
s the receiver contains.
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getParent
TreeNode getParent()
Returns the parentTreeNode
of the receiver.
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getIndex
int getIndex(TreeNode node)
Returns the index ofnode
in the receivers children. If the receiver does not containnode
, -1 will be returned.
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getAllowsChildren
boolean getAllowsChildren()
Returns true if the receiver allows children.
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isLeaf
boolean isLeaf()
Returns true if the receiver is a leaf.
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children
Enumeration children()
Returns the children of the receiver as anEnumeration
.
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