Tree Lines
import java.awt.BorderLayout; import java.awt.Container; import javax.swing.Box; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTree; public class TreeLines { public static void main(String args[]) { JFrame frame = new JFrame("Tree Lines"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container content = frame.getContentPane(); Box box = Box.createHorizontalBox(); JTree tree1 = new JTree(); tree1.putClientProperty("JTree.lineStyle", "Angled"); JScrollPane scrollPane1 = new JScrollPane(tree1); tree1.setAutoscrolls(true); JTree tree2 = new JTree(); JScrollPane scrollPane2 = new JScrollPane(tree2); box.add(scrollPane1, BorderLayout.WEST); box.add(scrollPane2, BorderLayout.EAST); frame.getContentPane().add(box, BorderLayout.CENTER); frame.setSize(300, 240); frame.setVisible(true); } }