Serializable
, Cloneable
, MutableTreeNode
, TreeNode
JTree
public static class JTree.DynamicUtilTreeNode extends DefaultMutableTreeNode
DynamicUtilTreeNode
can wrap vectors/hashtables/arrays/strings and create the appropriate children tree nodes as necessary. It is dynamic in that it will only create the children as necessary. Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans
package. Please see XMLEncoder
.
Modifier and Type | Field | Description |
---|---|---|
protected Object |
childValue |
Value to create children with. |
protected boolean |
hasChildren |
Does the this JTree have children? |
protected boolean |
loadedChildren |
Have the children been loaded yet? |
allowsChildren, children, EMPTY_ENUMERATION, parent, userObject
Constructor | Description |
---|---|
DynamicUtilTreeNode |
Creates a node with the specified object as its value and with the specified children. |
Modifier and Type | Method | Description |
---|---|---|
Enumeration |
children() |
Subclassed to load the children, if necessary. |
static void |
createChildren |
Adds to parent all the children in children . |
TreeNode |
getChildAt |
Subclassed to load the children, if necessary. |
int |
getChildCount() |
Returns the number of child nodes. |
boolean |
isLeaf() |
Returns true if this node allows children. |
protected void |
loadChildren() |
Loads the children based on childValue . |
add, breadthFirstEnumeration, clone, depthFirstEnumeration, getAllowsChildren, getChildAfter, getChildBefore, getDepth, getFirstChild, getFirstLeaf, getIndex, getLastChild, getLastLeaf, getLeafCount, getLevel, getNextLeaf, getNextNode, getNextSibling, getParent, getPath, getPathToRoot, getPreviousLeaf, getPreviousNode, getPreviousSibling, getRoot, getSharedAncestor, getSiblingCount, getUserObject, getUserObjectPath, insert, isNodeAncestor, isNodeChild, isNodeDescendant, isNodeRelated, isNodeSibling, isRoot, pathFromAncestorEnumeration, postorderEnumeration, preorderEnumeration, remove, remove, removeAllChildren, removeFromParent, setAllowsChildren, setParent, setUserObject, toString
protected boolean hasChildren
JTree
have children? This property is currently not implemented.protected Object childValue
protected boolean loadedChildren
public DynamicUtilTreeNode(Object value, Object children)
Vector
, or a Hashtable
-- even if empty. Otherwise, the node is not allowed to have children.value
- the Object
that is the value for the new nodechildren
- an array of Object
s, a Vector
, or a Hashtable
used to create the child nodes; if any other object is specified, or if the value is null
, then the node is not allowed to have childrenpublic static void createChildren(DefaultMutableTreeNode parent, Object children)
children
. If children
is an array or vector all of its elements are added is children, otherwise if children
is a hashtable all the key/value pairs are added in the order Enumeration
returns them.parent
- the parent nodechildren
- the childrenpublic boolean isLeaf()
isLeaf
in interface TreeNode
isLeaf
in class DefaultMutableTreeNode
public int getChildCount()
getChildCount
in interface TreeNode
getChildCount
in class DefaultMutableTreeNode
protected void loadChildren()
childValue
. If childValue
is a Vector
or array each element is added as a child, if childValue
is a Hashtable
each key/value pair is added in the order that Enumeration
returns the keys.public TreeNode getChildAt(int index)
getChildAt
in interface TreeNode
getChildAt
in class DefaultMutableTreeNode
index
- an index into this node's child arraypublic Enumeration<TreeNode> children()
children
in interface TreeNode
children
in class DefaultMutableTreeNode
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/JTree.DynamicUtilTreeNode.html