Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

«interface»
javax.swing.tree.TreeModel
+getChild(parent: Object, index: int): Object
+getChildCount(parent: Object): int
+getIndexOfChild(parent: Object, child: Object): int
+getRoot(): Object
+isLeaf(node: Object): boolean
+addTreeModelListener(listener:
TreeModelListener): void
+removeTreeModelListener(listener:
TreeModelListener): void
+valueForPathChanged(path: TreePath, newValue:
Object): void
Returns the child of the parent at the index in the parent's child array.
Returns the number of children of the specified parent in the tree model.
Returns the index of the child in the parent. If the parent or child is null, returns –1.
Returns the root of the tree. Returns null if the tree is empty.
Returns true if the specified node is a leaf.
Adds a listener for the TreeModelEvent posted after the tree changes.
Removes a listener previously added with addTreeModelListener.
Messaged when the user has altered the value for the item identified by path to
newValue.
javax.swing.tree.DefaultTreeModel
#asksAllowsChildren: boolean
#root: TreeNode
+DefaultTreeModel(root: TreeNode)
+DefaultTreeModel(root: TreeNode,
asksAllowsChildren: boolean)
+asksAllowsChildren(): boolean
+getPathToRoot(aNode: TreeNode): TreeNode[]
+insertNodeInto(newChild: MutableTreeNode,
parent: MutableTreeNode, index: int): void
+reload(): void
+removeNodeFromParent(node: MutableTreeNode):
void
Tells how leaf nodes are determined. True if only nodes that do not allow
children are leaf nodes, false if nodes that have no children are leaf nodes.
The root of the tree.
Creates a DefaultTreeModel with the specified root.
Creates a DefaultTreeModel with the specified root and decides whether a
node is a leaf node in the specified manner.
Returns asksAllowsChildren.
Returns the nodes in an array from root to the specified node.
Inserts newChild at location index in parent’s children.
Reloads the model (invoke this method if the tree has been modified).
Removes the node from its parent.
Figure 40.22
TreeModel represents an entire tree and DefaultTreeModel is a concrete
implementation of it.
Once a tree is created, you can obtain its tree model using the
getModel method. Listing 40.13 gives an example that traverses
all the nodes in a tree using the tree model. Line 1 creates a
tree using JTree’s no-arg constructor with the default sample
nodes, as shown in Figure 40.18. The tree model for the tree is
obtained in line 4. Line 5 invokes the traversal method to
traverse the nodes in the tree.
Listing 40.13 TestTreeModel.java
1 public class TestTreeModel {
2 public static void main(String[] args) {
3 javax.swing.JTree jTree1 = new javax.swing.JTree();
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