TreeNode (Java SE 19 & JDK 19) (original) (raw)

All Known Subinterfaces:

[MutableTreeNode](MutableTreeNode.html "interface in javax.swing.tree")

All Known Implementing Classes:

[AbstractDocument.AbstractElement](../text/AbstractDocument.AbstractElement.html "class in javax.swing.text"), [AbstractDocument.BranchElement](../text/AbstractDocument.BranchElement.html "class in javax.swing.text"), [AbstractDocument.LeafElement](../text/AbstractDocument.LeafElement.html "class in javax.swing.text"), [DefaultMutableTreeNode](DefaultMutableTreeNode.html "class in javax.swing.tree"), [DefaultStyledDocument.SectionElement](../text/DefaultStyledDocument.SectionElement.html "class in javax.swing.text"), [HTMLDocument.BlockElement](../text/html/HTMLDocument.BlockElement.html "class in javax.swing.text.html"), [HTMLDocument.RunElement](../text/html/HTMLDocument.RunElement.html "class in javax.swing.text.html"), [JTree.DynamicUtilTreeNode](../JTree.DynamicUtilTreeNode.html "class in javax.swing")

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

[children](#children%28%29)()
Returns the children of the receiver as an Enumeration.
boolean
Returns true if the receiver allows children.
[getChildAt](#getChildAt%28int%29)(int childIndex)
Returns the child TreeNode at indexchildIndex.
int
Returns the number of children TreeNodes the receiver contains.
int
Returns the index of node in the receivers children.
[getParent](#getParent%28%29)()
Returns the parent TreeNode of the receiver.
boolean
[isLeaf](#isLeaf%28%29)()
Returns true if the receiver is a leaf.

• Method Details

  • getChildAt

  TreeNode getChildAt(int childIndex)
  Returns the child TreeNode at indexchildIndex.
  Parameters:
  childIndex - index of child
  Returns:
  the child node at given index

  • getChildCount

  int getChildCount()
  Returns the number of children TreeNodes the receiver contains.
  Returns:
  the number of children the receiver contains

  • getParent

  Returns the parent TreeNode of the receiver.
  Returns:
  the parent of the receiver

  • getIndex

  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

  Returns the children of the receiver as an Enumeration.
  Returns:
  the children of the receiver as an Enumeration