Java Swing How to - Automatically resize a JTree

Question

We would like to know how to automatically resize a JTree.

Answer

import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTree;
//from w w w.j  a  v  a 2 s.c  o  m
public class Main {

  public static void main(String[] args) {
    JTree tree = new JTree();
    tree.setVisibleRowCount(10);
    JOptionPane.showMessageDialog(null, new JScrollPane(tree));
  }
}