import java.awt.BorderLayout;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
public class MainClass {
public static void main(String args[]) {
JFrame frame = new JFrame("Swing Package Hierarchy");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Vector rootVector = new TreeVector("A", new String[] { "a" });
JTree tree = new JTree(rootVector);
tree.setRootVisible(true);
TreeModel model = tree.getModel();
model.valueForPathChanged(new TreePath(model.getRoot()), "javax.swing");
((DefaultTreeModel) model).reload();
JScrollPane scrollPane = new JScrollPane(tree);
frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
frame.setSize(300, 300);
frame.setVisible(true);
}
}
class TreeVector extends Vector {
String name;
TreeVector(String name) {
this.name = name;
}
TreeVector(String name, Object elements[]) {
this.name = name;
for (int i = 0, n = elements.length; i < n; i++) {
add(elements[i]);
}
}
public String toString() {
return name;
}
}