A DESCRIPTION OF THE PROBLEM :
The javadoc for JRootPane.getMenuBar() is also wrong.

It must point to getJMenuBar(), not getJMenubar()." Java is case-sensitive language, so javadoc for JRootPane.getMenuBar must be fixed and contain link to
getJMenuBar() with uppercase letter 'B'



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Deprecated. As of Swing version 1.0.3 replaced by getJMenuBar().
ACTUAL -
Deprecated. As of Swing version 1.0.3 replaced by getJMenubar().

URL OF FAULTY DOCUMENTATION :
http://java.sun.com/j2se/1.5.0/docs/api/javax/swing/JRootPane.html