Using DefaultTreeCellRenderer : Tree Renderer Editor « Swing JFC « Java

Using DefaultTreeCellRenderer

import java.awt.Color;
import java.awt.Dimension;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;

public class Main extends JFrame {
  private JTree m_simpleTree;

  private DefaultMutableTreeNode m_rootNode;

  public Main() {
    m_rootNode = new DefaultMutableTreeNode("A");

    DefaultMutableTreeNode enggNode = new DefaultMutableTreeNode("B");
    DefaultMutableTreeNode markNode = new DefaultMutableTreeNode("C");
    DefaultMutableTreeNode hrNode = new DefaultMutableTreeNode("D");

    m_simpleTree = new JTree(m_rootNode);

    DefaultTreeCellRenderer cellRenderer = (DefaultTreeCellRenderer) m_simpleTree.getCellRenderer();

    cellRenderer.setOpenIcon(new ImageIcon("open.gif"));
    cellRenderer.setClosedIcon(new ImageIcon("closed.gif"));
    cellRenderer.setLeafIcon(new ImageIcon("leaf.gif"));

    cellRenderer.setBackgroundNonSelectionColor(new Color(255, 255, 221));
    cellRenderer.setBackgroundSelectionColor(new Color(0, 0, 128));

    JScrollPane scrollPane = new JScrollPane(m_simpleTree);

  public static void main(String[] arg) {
    Main m = new Main();

    m.setSize(new Dimension(450, 300));


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