import javax.swing.tree.*;
import javax.swing.*;
import java.awt.*;
public class TreeConstruct1 extends JFrame
{
public static void main(String[] args)
{
TreeConstruct obj=new TreeConstruct();
obj.setSize(350,500);
obj.setVisible(true);
}
public TreeConstruct1()
{
try
{
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
}
catch(Exception exception)
{
exception.printStackTrace();
}
JPanel panel =new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.LEFT));
DefaultMutableTreeNode top=new DefaultMutableTreeNode("Library");
DefaultMutableTreeNode branch1=new DefaultMutableTreeNode("Comics");
DefaultMutableTreeNode branch2=new DefaultMutableTreeNode("History");
DefaultMutableTreeNode branch3=new DefaultMutableTreeNode("Scientific");
//adding to the topmost node
top.add(branch1);
top.add(branch2);
top.add(branch3);
//adding to the First branch
DefaultMutableTreeNode node1_b1=new DefaultMutableTreeNode("Tom and Jerry");
DefaultMutableTreeNode node2_b1=new DefaultMutableTreeNode("Simpsons");
branch1.add(node1_b1);
branch1.add(node2_b1);
//adding to the Second branch
DefaultMutableTreeNode node1_b2=new DefaultMutableTreeNode("The Great History of Aruna Kumar Reddy");
DefaultMutableTreeNode node2_b2=new DefaultMutableTreeNode("Chanakya");
DefaultMutableTreeNode node3_b2=new DefaultMutableTreeNode("Changhiz Khan");
branch2.add(node1_b2);
branch2.add(node2_b2);
branch2.add(node3_b2);
//adding to the Third branch
DefaultMutableTreeNode node1_b3=new DefaultMutableTreeNode("Physical");
DefaultMutableTreeNode node2_b3=new DefaultMutableTreeNode("Biological");
DefaultMutableTreeNode n1_node2_b3=new DefaultMutableTreeNode("Animal Science");
DefaultMutableTreeNode n2_node2_b3=new DefaultMutableTreeNode("Plant Science");
node2_b3.add(n1_node2_b3);
node2_b3.add(n2_node2_b3);
DefaultMutableTreeNode node3_b3=new DefaultMutableTreeNode("Chemical");
branch3.add(node1_b3);
branch3.add(node2_b3);
branch3.add(node3_b3);
ImageIcon icon=new ImageIcon("abook.gif");
JTree tree=new JTree(top,true);
tree.setToolTipText(" and ");
panel.add(tree);
getContentPane().add(panel);
}
}