jtree

Import Java. AWT. dimension; import Java. AWT. color; import javax. swing. jframe; import javax. swing. jpanel; import javax. swing. jscrollpane; import javax. swing. jtree; import javax. swing. boxlayout; import javax. swing. tree. treepath; import javax. swing. tree. defaultmutabletreenode; import javax. swing. tree. defaulttreemodel;/* jtree constructor: jtree

Import java. AWT. dimension;Import java. AWT. color;Import javax. Swing. jframe;Import javax. Swing. jpanel;Import javax. Swing. jscrollpane;Import javax. Swing. jtree;Import javax. Swing. boxlayout;Import javax. Swing. Tree. treepath;Import javax. Swing. Tree. defaultmutabletreenode;Import javax. Swing. Tree. defaulttreemodel;/*Jtree constructor:Jtree ()Jtree (h

A specific node in the tree can be identified by TreePath (the object that encapsulates the node and all its ancestors) or by its display row, where each row in the display area displays a node. The expansion node is a non-leaf node (identified by a return of false TreeModel.isLeaf(node) ), and when all its ancestors are expanded , the node displays its child nodes. collapsing nodes are the nodes that hide them. A hidden node is a node that is located below the collapsed ancestor. The parent no

Weblogic and IBM Websphere. Therefore, when designing a software configuration file, we will increasingly consider using XML as the format of the configuration file. Because the configuration file sometimes must be modified by users, providing a visual format for editing the configuration file is a good embodiment of user interaction of the software. We must find a visual method for the XML document. JTree in the Swing component in the Java language

PackageCom.swing.demo;Importjava.awt.Component;ImportJava.awt.event.MouseAdapter;Importjava.awt.event.MouseEvent;Importjava.util.ArrayList;Importjava.util.Enumeration;Importjava.util.List;ImportJavax.swing.JFrame;ImportJavax.swing.JScrollPane;ImportJavax.swing.JTree;Importjavax.swing.SwingUtilities;Importjavax.swing.event.TreeExpansionEvent;ImportJavax.swing.event.TreeExpansionListener;Importjavax.swing.event.TreeSelectionEvent;ImportJavax.swing.event.TreeSelectionListener;ImportJavax.swing.tree

I recently read the source code of "Enterprise express mail". The friends list of this project is implemented using jtree. After understanding its writing method, I want to familiarize myself with the use of the jtree control. Therefore, I wrote a small exercise to show that the username and image path in the database are in the jtree, and users can be added and

Using the JTree componentSome concepts: Root node: top-most point Child nodes: nodes below the root node Leaf node: When a node does not have any child nodes Branch nodes: Conversely called Construct JTree with Hashtable to TreeNode structure JTreeEach node on the JTree represents a TreeNode object. TreeNode itself is a interface.TreeNod

Package package2; import javax. swing. *; import javax. swing. event. *; import javax. swing. tree. *; import Java. AWT. *; import Java. AWT. event. *; import Java. io. *; import Java. util. *;/** tree exercise, default node defaultmutabletreenode **/public class tree_practice extends jframe {container; jtree; jscrollpane scrollpane; Public tree_practice () {This. setdefaclocloseoperation (jframe. exit_on_close); this. container = T His. getcontentpan

===== 1 custom alarmdefaultmutabletreenode extends defaultmutabletreenode ==== Import java. Io. serializable; Import javax. Swing. Tree. defaultmutabletreenode; Public class alarmdefaultmutabletreenode extends defaultmutabletreenode implements serializable {Private Static final long serialversionuid = 1l; Private int nodetype;Public alarmdefaultmutabletreenode (){Super ();// Todo auto-generated constructor stub} Public alarmdefaultmutabletreenode (Object arg0, Boolean arg1 ){Super (arg0, arg1 );

Import java.awt.event.ActionEvent; Import Java.awt.event.ActionListener; Import Javax.swing.JFrame; Import Javax.swing.JMenuItem; Import Javax.swing.JOptionPane; Import Javax.swing.JPopupMenu; Import Javax.swing.JTree; Import Javax.swing.tree.DefaultMutableTreeNode; Import Javax.swing.tree.DefaultTreeModel; /** * A JTree maintenance code. Focus on * 1) Get the way to select a node * 2 the way to increase jpopmenu in

= (checknode) E. nextelement ();Node. setselected (isselected );}}} Public Boolean isselected (){Return isselected;} // If you want to change "isselected" by celleditor,/*Public void setuserobject (Object OBJ) {If (OBJ instanceof Boolean ){* Setselected (Boolean) OBJ). booleanvalue ();} else {* Super. setuserobject (OBJ );}}*/ } Checknodetree. Java Import javax. Swing. Icon;Import javax. Swing. jcheckbox;Import javax. Swing. jframe;Import javax. Swing. jlabel;Import javax. Swing. jpanel;Import

Steps to use JTree: Create a node of a tree as the head node (its child nodes are also the same method of creation): Defaultmutabletreenode Headnode = new Defaultmutabletreenode ("First level"); Then the node is added using the JTree Setmodel method (the other nodes are added via the head node), and the head node is added to display. Create a sub-node, add a sub-node with the Add method of the h

voidmousepressed (MouseEvent e) {Try{jtree Tree=(JTree) E.getsource (); intRowlocation =tree.getrowforlocation (E.getx (), e.gety ()); TreePath TreePath=Tree.getpathforrow (rowlocation); TreeNode TreeNode=(TreeNode) treepath.getlastpathcomponent (); Oldnodename=treenode.tostring (); } Catch(NullPointerException ne) {}}} classMytreecelleditorlistenerImplementsCelleditorlistener { Public voideditingstopped (

("Native disk (E:)");Treemodel.insertnodeinto (Leafnode, Node2, Node2.getchildcount ()); Defaultmutabletreenode node31 = new Defaultmutabletreenode ("Site list"); Treemodel.insertnodeinto (Node31, Node3, Node3.getchildcount ()); Leafnode = new Defaultmutabletreenode ("Tama Station"); Treemodel.insertnodeinto (Leafnode, Node3, Node3.getchildcount ()); Leafnode = new Defaultmutabletreenode ("Post-bar message"); Treemodel.insertnodeinto (Leafnode, Node3, Node3.getchildcount ()); Leafnode = n

; }Else{ Type = filedescriptiontext; } } ReturnType; } This is the file type. @ Override PublicIcon getIcon (file F ){ This is an image representation. In this way, the image and name we need after building this FileView can be obtained. Then there is our Renderer: PrivateClassFilesystemtreerendererExtendsDefaulttreecellrenderer { Rewrite its method, set the image and name we get from FileView: @ Override PublicComponent gettreecellrenderercomponent (

/** * Method of overriding parent class Defaulttreecellrenderer * / @Override PublicComponentgettreecellrenderercomponent(JTree tree, Object value,BooleanSelectedBooleanExpandedBooleanIsLeaf,intRowBooleanHasfocus) {//Selected if(selected) {Setforeground (Gettextselectioncolor ()); }Else{Setforeground (Gettextnonselectioncolor ()); }//TreeNodeDefaultmutabletreenode TreeNode = (defaultmutabletreenode) value; Object obj = Treenode.ge

In the homework have encountered about JTree and jtable linkage problem, and later on the Internet to check a lot of, are not written all the way, so wrote a small procedure for the consolidation and for the needs of the people reference One implementation function 1 Display the data in the corresponding table 2 realizes the linkage between JTree and jtable. 3 Add and delete a row for the corresponding tab

dom|xml| data Turn from: http://www.softhouse.com.cn/html/200410/2004102517145700001335.html Using Jdom to manipulate XML data to generate an applet containing JTree in our work, we often encounter the generation of tree components, if you are developing webapplication, purely JavaScript to generate tree components is very tedious, and the interaction is not very good. So many products enable applets to implement the functionality of the tree compon

. abstractAction; import javax. swing. JButton; import javax. s Wing. JLabel; import javax. swing. JOptionPane; import javax. swing. JPanel; import javax. swing. JPopupMenu; import javax. swing. JScrollPane; import javax. swing. JTree; import javax. swing. swingUtilities; import javax. swing. event. treeModelEvent; import javax. swing. event. treeModelListener; import javax. swing. tree. defaultMutableTreeNode; import javax. swing. tree. defaultTreeMo

Import Java. AWT. borderlayout; import Java. AWT. component; import Java. AWT. event. actionevent; import Java. AWT. event. actionlistener; import Java. AWT. event. keyevent; import Java. AWT. event. keylistener; import Java. io. file; import Java. util. vector; import javax. swing. jbutton; import javax. swing. jcombobox; import javax. swing. jframe; import javax. swing. jpanel; import javax. swing. jscrollpane; import javax. swing. jtree; Im Port ja