Listening for Selection Events in a JTree Component - Java Swing

Java examples for Swing:JTree

  1. HOME
  2. Java
  3. Swing
  4. JTree

Description

Listening for Selection Events in a JTree Component

Demo Code

import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.TreePath;

public class Main {
  public static void main(String[] argv) {
    JTree tree = null;//from   w  ww  .j a  va 2  s  .  co  m
    tree.addTreeSelectionListener(new TreeSelectionListener() {
      public void valueChanged(TreeSelectionEvent evt) {
          // Get all nodes whose selection status has changed
          TreePath[] paths = evt.getPaths();

          // Iterate through all affected nodes
          for (int i=0; i<paths.length; i++) {
              if (evt.isAddedPath(i)) {
                  // This node has been selected
              } else {
                  // This node has been deselected
              }
          }
      }
  });
    
  }
}

Related Tutorials