Javadoc comments have links with "//" in them instead of "/". 
On oracle.com, this causes certain urls to be crawled and indexed with // instead of /.
When searching on download.oracle.com (Oracle's documentation web site), the search engine returns results with // in the urls. When you open a url with //, the relative links in the page are broken. This is most obvious because the branding elements such as css files cannot be referenced. Other relative links may be broken too.
Removing the // from the url and re-loading the page fixes the problem.

This is a real problem because more pages are affected than just the ones with //. The search crawler indexes certain paths with // and all pages under that directory are then returned with // in the url.

This problem is likely to be magnified when Javadoc LAF is enhanced  to use stylesheets. 

A list of urls with // is attached. This list is NOT exhaustive.

JDK 6 api doc
-------------
several references to tools//

// converted to / in ../../../../javax/naming/ldap/ftp://ftp.isi.edu/in-notes/rfc2251.txt
    occurred in
    /../docs/api/javax/naming/ldap/class-use/ExtendedResponse.html
    /../docs/api/javax/naming/ldap/class-use/HasControls.html
    /api/javax/naming/ldap/class-use/ExtendedResponse.html

// converted to / in ../../../../technotes/guides//security/jsse/JSSERefGuide.html#AppA
    occurred in
    /../docs/api/javax/net/ssl/SSLContext.html
    /api/javax/net/ssl/SSLContext.html

// converted to / in ../../../javax/naming/ldap/ftp://ftp.isi.edu/in-notes/rfc2251.txt
    occurred in
    /../docs/api/javax/naming/ldap/package-use.html
    /../docs/api/javax/naming/ldap/package-use.html
    /../docs/api/javax/naming/ldap/package-use.html
    /../docs/api/javax/naming/ldap/package-use.html

// converted to / in http://ietf.org//rfc/rfc2253.txt
    occurred in
    /../docs/api/java/lang/class-use/Object.html
    /../docs/api/java/lang/class-use/Object.html
    /../docs/api/javax/naming/class-use/Name.html
    /../docs/api/javax/naming/ldap/LdapName.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/package-summary.html
    /../docs/jre/api/security/jaas/spec/com/sun/security/auth/LdapPrincipal.html
    /../docs/jre/api/security/jaas/spec/com/sun/security/auth/package-summary.html
    /../docs/jre/api/security/jaas/spec/index-all.html
    /api/java/lang/class-use/Object.html
    /api/java/lang/class-use/Object.html
    /api/javax/naming/ldap/LdapName.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/package-summary.html
    /jre/api/security/jaas/spec/com/sun/security/auth/LdapPrincipal.html
    /jre/api/security/jaas/spec/com/sun/security/auth/package-summary.html
    /jre/api/security/jaas/spec/index-all.html

// converted to / in http://www.omg.org//docs/formal/99-10-07.pdf
    occurred in
    /../docs/technotes/guides/idl/POA.html

JDK 7 API doc
-------------

several references to tools//

// converted to / in ../../../../javax/naming/ldap/ftp://ftp.isi.edu/in-notes/rfc2251.txt
    occurred in
    /../docs/api/javax/naming/ldap/class-use/ExtendedResponse.html
    /../docs/api/javax/naming/ldap/class-use/HasControls.html
    /api/javax/naming/ldap/class-use/ExtendedResponse.html

// converted to / in ../../../../technotes/guides//security/jsse/JSSERefGuide.html#AppA
    occurred in
    /../docs/api/javax/net/ssl/SSLContext.html
    /api/javax/net/ssl/SSLContext.html

// converted to / in ../../../javax/naming/ldap/ftp://ftp.isi.edu/in-notes/rfc2251.txt
    occurred in
    /../docs/api/javax/naming/ldap/package-use.html
    /../docs/api/javax/naming/ldap/package-use.html
    /../docs/api/javax/naming/ldap/package-use.html
    /../docs/api/javax/naming/ldap/package-use.html

// converted to / in http://ietf.org//rfc/rfc2253.txt
    occurred in
    /../docs/api/java/lang/class-use/Object.html
    /../docs/api/java/lang/class-use/Object.html
    /../docs/api/javax/naming/class-use/Name.html
    /../docs/api/javax/naming/ldap/LdapName.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/Rdn.html
    /../docs/api/javax/naming/ldap/package-summary.html
    /../docs/jre/api/security/jaas/spec/com/sun/security/auth/LdapPrincipal.html
    /../docs/jre/api/security/jaas/spec/com/sun/security/auth/package-summary.html
    /../docs/jre/api/security/jaas/spec/index-all.html
    /api/java/lang/class-use/Object.html
    /api/java/lang/class-use/Object.html
    /api/javax/naming/ldap/LdapName.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/Rdn.html
    /api/javax/naming/ldap/package-summary.html
    /jre/api/security/jaas/spec/com/sun/security/auth/LdapPrincipal.html
    /jre/api/security/jaas/spec/com/sun/security/auth/package-summary.html
    /jre/api/security/jaas/spec/index-all.html

// converted to / in http://www.omg.org//docs/formal/99-10-07.pdf
    occurred in
    /../docs/technotes/guides/idl/POA.html