Build a tree and populate it from hashtables : Tree « Swing JFC « Java

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Java » Swing JFC » Tree Screenshots  Build a tree and populate it from hashtables    /* Java Swing, 2nd Edition By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole ISBN: 0-596-00408-7 Publisher: O'Reilly  */ // ObjectTree.java //A simple test to see how we can build a tree and populate it. This version //builds the tree from hashtables. // import java.awt.BorderLayout; import java.util.Hashtable; import javax.swing.JFrame; import javax.swing.JTree; public class ObjectTree extends JFrame {   JTree tree;   String[][] sampleData = { { "Amy" }, { "Brandon", "Bailey" }, { "Jodi" },       { "Trent", "Garrett", "Paige", "Dylan" }, { "Donn" },       { "Nancy", "Donald", "Phyllis", "John", "Pat" }, { "Ron" },       { "Linda", "Mark", "Lois", "Marvin" } };   public ObjectTree() {     super("Hashtable Test");     setSize(400, 300);     setDefaultCloseOperation(EXIT_ON_CLOSE);   }   public void init() {     Hashtable h = new Hashtable();     // Build up the hashtable using every other entry in the String[][] as a     // key     // followed by a String[]"value."     for (int i = 0; i < sampleData.length; i += 2) {       h.put(sampleData[i][0], sampleData[i + 1]);     }     tree = new JTree(h);     getContentPane().add(tree, BorderLayout.CENTER);   }   public static void main(String args[]) {     ObjectTree tt = new ObjectTree();     tt.init();     tt.setVisible(true);   } }                               Related examples in the same category 1.  Build a tree based on DefaultMutableTreeNode 2.  Add Tree to JScrollPane 3.  Genealogy Tree 4.  Tree Lines 5.  DefaultMutableTreeNode Node Tree Sample 6.  Display a file system in a JTree view 7.  JTree based Class Browser 8.  Display Class in a Tree 9.  Edit a Tree 10.  implements TreeSelectionListener to create your own listener 11.  File folder Tree with icons 12.  File Tree with Popup Menu 13.  File Tree with Tooltips 14.  Ancestor Tree with Icons 15.  Tree Icon Demo 16.  DefaultMutableTreeNode and user object 17.  Display user object in a tree 18.  Tree Expand Event Demo 19.  Tree: Drag and Drop 20.  Tree open Icon 21.  Traverse Tree 22.  Tree based on Array structure 23.  Tree will Expand event and listener 24.  Set the Tree Line 25.  Tree Selection Row 26.  JTree.DynamicUtilTreeNode.createChildren 27.  Install ToolTips for Tree (JTree) 28.  Tree Expand Event Demo 2 29.  A tree with component 30.  A sample component for dragging and dropping a collection of files into a tree. 31.  DnD (drag and drop)JTree code 32.  A simple test to see how we can build a tree and populate it 33.  Installs custom icons 34.  Build a tree and customize its icons 35.  Displaying Hierarchical Data within a JTree 36.  Add and remove tree Node and expand the tree node 37.  File System Tree 38.  TreeExpansionListener and TreeExpansionEvent 39.  Enabling and Disabling Multiple Selections in a JTree Component 40.  Allow only a single node to be selected (default) 41.  Allow selection to span one vertical contiguous set of visible nodes 42.  Allow multiple selections of visible nodes 43.  Setting the Row Height of a JTree 44.  All rows will be given 15 pixels of height 45.  Have the row height for each row computed individually 46.  Flush the internal cache of Row height 47.  Preventing Expansion or Collapse of a Node in a JTree: override JTree.setExpandedState() 48.  Removing a Node to a JTree Component 49.  JTree root cannot be removed with removeNodeFromParent(), use DefaultTreeModel.setRoot() to remove the root 50.  Listening for Expansion and Collapse Events in a JTree Component 51.  Expansion and Collapse Events in a JTree are fired before a node is expanded or collapsed can be vetoed, thereby preventing the operation. 52.  Creating a JTree Component 53.  Changing and Removing the Default Icons in a JTree Component 54.  Use UIManager to change the default icon for JTree 55.  Getting the Selected Nodes in a JTree Component 56.  Visiting All the Nodes in a JTree Component 57.  Traverse all expanded nodes in tree 58.  Finding a Node in a JTree Component 59.  Search backward from last visible row looking for any visible node whose name starts with prefix. 60.  Find the path regardless of visibility that matches the specified sequence of names 61.  Adding a Node to a JTree Component 62.  Returns a TreePath containing the specified node. 63.  Converting All Nodes in a JTree Component to a TreePath Array 64.  Get path for all expanded or not expanded tree pathes 65.  Expanding or Collapsing All Nodes in a JTree Component 66.  Preventing the Expansion or Collapse of a Node in a JTree Component 67.  Listening for Selection Events in a JTree Component 68.  Have a popup attached to a JTree 69.  Deleting nodes from JTree 70.  Adding editable nodes to JTree 71.  Searching node in a JTree 72.  Drag and drop of a group of files into a tree 73.  JTree drag and drop utilites 74.  Expand All for a tree path 75.  Get tree path from TreeNode