Java SplitPaneDemo not working?

Question

I am trying to get this up code up and running from java official site but I am getting

Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError
    at sun.awt.Win32GraphicsConfig.getBounds(Native Method)
    at sun.awt.Win32GraphicsConfig.getBounds(Unknown Source)
    at java.awt.Window.init(Unknown Source)
    at java.awt.Window.<init>(Unknown Source)
    at java.awt.Frame.<init>(Unknown Source)
    at javax.swing.JFrame.<init>(Unknown Source)

http://download.oracle.com/javase/tutorial/uiswing/examples/components/SplitPaneDemo2Project/src/components/SplitPaneDemo2.java

Also, at the following line, the method doesn't even exist. I am using getContentPane() instead.

 JSplitPane top = splitPaneDemo.getSplitPane();