How to create and use Java JTree Menu

Java JTree is a swing component that is used to display data in hierarchy manner.JTree mainly comprises of root node which is the par...

Java JTree is a swing component that is used to display data in hierarchy manner.JTree mainly comprises of root node which is the parent.A node may have children's.

Code to develop a simple JTree

import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.tree.DefaultMutableTreeNode;
public class JTreeMenu {
    public JTree tree;
    public JTreeMenu()
    {
        //creating root node
    DefaultMutableTreeNode root=new DefaultMutableTreeNode("POS");
    //creating child nodes
    DefaultMutableTreeNode transactions=new DefaultMutableTreeNode("Transactions");
    DefaultMutableTreeNode reports= new DefaultMutableTreeNode("Reports");
    DefaultMutableTreeNode users= new DefaultMutableTreeNode("Users");
    DefaultMutableTreeNode stock= new DefaultMutableTreeNode("Stock");
    DefaultMutableTreeNode taxes= new DefaultMutableTreeNode("Taxes");
    DefaultMutableTreeNode payments= new DefaultMutableTreeNode("Payments Methods");
    root.add(transactions);
    root.add(reports);
    root.add(users);
    root.add(stock);
            root.add(taxes);
            root.add(payments);
           //create a tree and pass the root node
           
           tree=new JTree(root);
           JFrame frame=new JFrame("JTree Example");
           frame.add(tree);
           frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setTitle("JTree Example");       
        frame.pack();
           frame.setVisible(true);
           
           
    
    
    }
  
    public static void main(String args[])
    {
    new JTreeMenu();
    }
}

Adding more children to a node

Below code adds more children to reports node

import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.tree.DefaultMutableTreeNode;
public class JTreeMenu {
    public JTree tree;
    public JTreeMenu()
    {
        //creating root node
    DefaultMutableTreeNode root=new DefaultMutableTreeNode("POS");
    //creating child nodes
    DefaultMutableTreeNode transactions=new DefaultMutableTreeNode("Transactions");
    DefaultMutableTreeNode reports= new DefaultMutableTreeNode("Reports");
    
   
    //adding more children to reports node
    DefaultMutableTreeNode sales=new DefaultMutableTreeNode("Sales");
     DefaultMutableTreeNode customers= new  DefaultMutableTreeNode("Customers");
      DefaultMutableTreeNode items=new  DefaultMutableTreeNode("Items");
      reports.add(sales);
      reports.add(customers);
      reports.add(items);

    DefaultMutableTreeNode users= new DefaultMutableTreeNode("Users");
    DefaultMutableTreeNode stock= new DefaultMutableTreeNode("Stock");
    DefaultMutableTreeNode taxes= new DefaultMutableTreeNode("Taxes");
    DefaultMutableTreeNode payments= new DefaultMutableTreeNode("Payments Methods");
    root.add(transactions);
    root.add(reports);
    root.add(users);
    root.add(stock);
            root.add(taxes);
            root.add(payments);
           //create a tree and pass the root node
           
           tree=new JTree(root);
           JFrame frame=new JFrame("JTree Example");
           frame.add(tree);
           frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setTitle("JTree Example");       
        frame.pack();
           frame.setVisible(true);
           
           
    
    
    }
  
    public static void main(String args[])
    {
    new JTreeMenu();
    }
}

Output