-
- 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 TreeNodeDefines the requirements for an object that can be used as a tree node in a JTree.Implementations of
TreeNodethat overrideequalswill typically need to overridehashCodeas well. Refer toTreeModelfor more information. For further information and examples of using tree nodes, see How to Use Tree Nodes in The Java Tutorial.
-
-
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description Enumeration<? extends TreeNode>children()Returns the children of the receiver as anEnumeration.booleangetAllowsChildren()Returns true if the receiver allows children.TreeNodegetChildAt(int childIndex)Returns the childTreeNodeat indexchildIndex.intgetChildCount()Returns the number of childrenTreeNodes the receiver contains.intgetIndex(TreeNode node)Returns the index ofnodein the receivers children.TreeNodegetParent()Returns the parentTreeNodeof the receiver.booleanisLeaf()Returns true if the receiver is a leaf.
-
-
-
Method Detail
-
getChildAt
TreeNode getChildAt(int childIndex)
Returns the childTreeNodeat indexchildIndex.- Parameters:
childIndex- index of child- Returns:
- the child node at given index
-
getChildCount
int getChildCount()
Returns the number of childrenTreeNodes the receiver contains.- Returns:
- the number of children the receiver contains
-
getParent
TreeNode getParent()
Returns the parentTreeNodeof the receiver.- Returns:
- the parent of the receiver
-
getIndex
int getIndex(TreeNode node)
Returns the index ofnodein the receivers children. If the receiver does not containnode, -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 anEnumeration.- Returns:
- the children of the receiver as an
Enumeration
-
-