Java JTree_4

package com.han; import java.awt.BorderLayout; import java.awt.Font; import java.util.Enumeration; import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.DefaultTreeCellRenderer; import javax.swing.tree.DefaultTreeModel; import javax.swing.tree.TreePath; public class JTree_4 extends JFrame { /** * */ private static final long serialVersionUID = -2323546046067757781L; public JTree_4() { DefaultMutableTreeNode root = new DefaultMutableTreeNode("ROOT"); DefaultMutableTreeNode nodeA = new DefaultMutableTreeNode("人事管理"); DefaultMutableTreeNode nodeB = new DefaultMutableTreeNode("待遇管理"); DefaultMutableTreeNode nodeC = new DefaultMutableTreeNode("系统维护"); root.add(nodeA); root.add(nodeB); root.add(nodeC); DefaultMutableTreeNode nodeAA = new DefaultMutableTreeNode("帐套管理"); DefaultMutableTreeNode nodeAB = new DefaultMutableTreeNode("考勤管理"); DefaultMutableTreeNode nodeAC = new DefaultMutableTreeNode("奖惩管理"); DefaultMutableTreeNode nodeAD = new DefaultMutableTreeNode("培训管理"); nodeA.add(nodeAA); nodeA.add(nodeAB); nodeA.add(nodeAC); nodeA.add(nodeAD); DefaultMutableTreeNode nodeBA = new DefaultMutableTreeNode("帐套管理"); DefaultMutableTreeNode nodeBB = new DefaultMutableTreeNode("人员设置"); DefaultMutableTreeNode nodeBC = new DefaultMutableTreeNode("待遇报表"); nodeB.add(nodeBA); nodeB.add(nodeBB); nodeB.add(nodeBC); DefaultMutableTreeNode nodeCA = new DefaultMutableTreeNode("企业架构"); DefaultMutableTreeNode nodeCB = new DefaultMutableTreeNode("基本资料"); DefaultMutableTreeNode nodeCC = new DefaultMutableTreeNode("系统初始化"); nodeC.add(nodeCA); nodeC.add(nodeCB); nodeC.add(nodeCC); DefaultTreeModel defaultTreeModel = new DefaultTreeModel(root); JTree tree = new JTree(defaultTreeModel); getContentPane().add(tree, BorderLayout.WEST); // expand initially all nodes of the tree @SuppressWarnings("rawtypes") Enumeration enumerate = root.preorderEnumeration(); while (enumerate.hasMoreElements()) { DefaultMutableTreeNode node = (DefaultMutableTreeNode) enumerate.nextElement(); tree.expandPath(new TreePath(node.getPath())); } // set root node invisible tree.setRootVisible(false); // set nodes' icons DefaultTreeCellRenderer treeCellRenderer = (DefaultTreeCellRenderer) tree.getCellRenderer(); treeCellRenderer.setLeafIcon(null); treeCellRenderer.setClosedIcon(null); treeCellRenderer.setOpenIcon(null); // set the connection line way tree.putClientProperty("JTree.lineStyle", "None"); // set row height of the tree and font style of the node object tree.setRowHeight(20); tree.setFont(new Font("宋体", Font.BOLD, 14)); } public static void main(String[] args) { JTree_4 instance = new JTree_4(); instance.setTitle("定制树"); instance.setVisible(true); instance.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); instance.pack(); } }