Java tutorial
import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTree; public class Main extends JFrame { public static void main(String[] args) { Main stt = new Main(); stt.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); stt.setSize(250, 250); stt.setVisible(true); } public Main() { Object[] genealogy = { "A", "B", "C", "D", "E", "F" }; java.util.Vector v = new java.util.Vector() { public String toString() { return "DD"; } }; v.addElement("1"); v.addElement("2"); v.addElement("3"); v.addElement("4"); genealogy[0] = v; JTree tree = new JTree(genealogy); tree.setRootVisible(true); JScrollPane jsp = new JScrollPane(tree); getContentPane().add(jsp); } }