Removing a Node to a JTree Component - Java Swing

Java examples for Swing:JTree

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Description

Removing a Node to a JTree Component

Demo Code

import javax.swing.JTree;
import javax.swing.text.Position;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.MutableTreeNode;
import javax.swing.tree.TreePath;

public class Main {

  public void main(String[] argv) {
    JTree tree = new JTree();
    DefaultTreeModel model = (DefaultTreeModel) tree.getModel();

    // Find node to remove
    int startRow = 0;
    String prefix = "b";
    TreePath path = tree.getNextMatch(prefix, startRow, Position.Bias.Forward);
    MutableTreeNode node = (MutableTreeNode) path.getLastPathComponent();

    // Remove node and all descendants are removed as well
    model.removeNodeFromParent(node);//from w w  w .jav a2s.  com

    // The root cannot be removed with removeNodeFromParent();
    // use the following to remove the root
    model.setRoot(null);
  }
}

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