import javax.swing.*;
import javax.swing.event.*;
import java.util.Properties;
import javax.swing.JTree.*;

public class TreeRootHide{
	public static void main(String[] args) {
		JFrame frame = new JFrame("Root Hide of tree");
		Properties prop = System.getProperties();
		JTree tree = new JTree(prop);
		tree.setRootVisible(false);
		JScrollPane scroll = new JScrollPane(tree);
		frame.getContentPane().add(scroll, "Center");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
		frame.setSize(350,400);
		frame.setVisible(true);
	}
}