How to realize the initialization of Netbeans JTree
This article mainly introduces the relevant knowledge of how to realize the initialization of Netbeans JTree, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article on how to initialize Netbeans JTree. Let's take a look.
In Netbeans JTree, the originally generated JTree is a fake tree. You can write the initialization function of JTree, and then call it after the window is initialized:
Public void treeInitialize () {DefaultMutableTreeNode root=new DefaultMutableTreeNode ("root"); try {m_DBMetaData = m_connection.getMetaData (); m_tabReset = m_DBMetaData.getTables (null, "%", "%", new String [] {"TABLES"}) While (m_tabReset.next ()) {DefaultMutableTreeNode t_newNode = new DefaultMutableTreeNode (m_tabReset.getString ("TABLE_NAME")); root.add (t_newNode);} TreeModel treeModel = new DefaultTreeModel (root); jDBTree.setModel (treeModel) } catch (SQLException e) {JOptionPane.showMessageDialog (this, "database access error"); System.exit (1);}}
This program fetches the table name from the database as the leaf node of JTree.
The response of the JTree leaf node double-click event and the acquisition of its Text:
Add MouseClicked event
Private void jDBTreeMouseClicked (java.awt.event.MouseEvent evt) {/ / TODO will add your processing code here: DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode) jDBTree.getLastSelectedPathComponent (); / / get the mouse click point if (selectedNode = = null) {return / / if it is not a node on the tree} if (selectedNode.isLeaf () & & evt.getClickCount () = = 2) {/ / make sure it is a leaf node and a double / / click event. ViewTable (selectedNode.toString ()); / / the parameter is the Text of the node. }} this is the end of the article on "how to initialize Netbeans JTree". Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "how to realize the initialization of Netbeans JTree". If you want to learn more, you are welcome to follow the industry information channel.
