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