TreeNode (Java Platform SE 8 ) (original) (raw)

• 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

  All Methods Instance Methods Abstract Methods

  Modifier and Type	Method	Description
  Enumeration	children()	Returns the children of the receiver as an Enumeration.
  boolean	getAllowsChildren()	Returns true if the receiver allows children.
  TreeNode	getChildAt(int childIndex)	Returns the child TreeNode at indexchildIndex.
  int	getChildCount()	Returns the number of children TreeNodes the receiver contains.
  int	getIndex(TreeNode node)	Returns the index of node in the receivers children.
  TreeNode	getParent()	Returns the parent TreeNode of the receiver.
  boolean	isLeaf()	Returns true if the receiver is a leaf.

• • Method Detail

     * #### getChildAt  
     [TreeNode](../../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree") getChildAt(int childIndex)  
     Returns the child `TreeNode` at index`childIndex`.  
     * #### getChildCount  
     int getChildCount()  
     Returns the number of children `TreeNode`s the receiver contains.  
     * #### getParent  
     [TreeNode](../../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree") getParent()  
     Returns the parent `TreeNode` of the receiver.  
     * #### getIndex  
     int getIndex([TreeNode](../../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree") node)  
     Returns the index of `node` in the receivers children. If the receiver does not contain `node`, -1 will be returned.  
     * #### getAllowsChildren  
     boolean getAllowsChildren()  
     Returns true if the receiver allows children.  
     * #### isLeaf  
     boolean isLeaf()  
     Returns true if the receiver is a leaf.  
     * #### children  
     [Enumeration](../../../java/util/Enumeration.html "interface in java.util") children()  
     Returns the children of the receiver as an `Enumeration`.

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