Java Swing TreePath create from DefaultMutableTreeNode
import java.awt.Container; import java.awt.FlowLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.TreePath; public class Main { public static void main(String args[]) { final JFrame f = new JFrame("JTree Demo"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container c = f.getContentPane(); c.setLayout(new FlowLayout()); DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root"); DefaultMutableTreeNode c1 = new DefaultMutableTreeNode("A"); DefaultMutableTreeNode c2 = new DefaultMutableTreeNode("B"); DefaultMutableTreeNode c3 = new DefaultMutableTreeNode("C"); root.add(c1);/*from ww w . j a v a 2 s . c om*/ root.add(c2); root.add(c3); c1.add(new DefaultMutableTreeNode("1")); c1.add(new DefaultMutableTreeNode("2")); c2.add(new DefaultMutableTreeNode("3")); c2.add(new DefaultMutableTreeNode("4")); c3.add(new DefaultMutableTreeNode("5")); DefaultMutableTreeNode n6 = new DefaultMutableTreeNode("6"); c3.add(n6); JTree t = new JTree(root); isDescendant(new TreePath(c2.getPath()),new TreePath(c3.getPath())); c.add(new JScrollPane(t)); f.pack(); f.setVisible(true); } private static boolean isDescendant(TreePath path1, TreePath path2) { int count1 = path1.getPathCount(); int count2 = path2.getPathCount(); if (count1 <= count2) return false; while (count1 != count2) { path1 = path1.getParentPath(); count1--; } return path1.equals(path2); } }