etso dice en los terminos legales de la documentacion
Sun's user and programmer documentation for Java platform products and technologies may not be redistributed publicly on CD-ROM or printed in books or on the Internet or by FTP or translated to another language in part or in whole by anyone outside of Java Software. Permission may be granted in some cases for private redistribution as described below.
You may, without requesting permission, link to any location on our java.sun.com website. For example, live links into our platform API documentation will provide your developers with a guarantee of current documentation directly from Sun Microsystems.
o sea que puedes hacer referencia pero no puedes distribuirla, para mas detalles te sugiero que leas todos los terminos legales
Documentation Redistribution Policy
Saludos