Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 16.0.1.v201112150204-238534 (com.android.ide.eclipse.adt.feature.group 16.0.1.v201112150204-238534)
Missing requirement: Android Development Tools 16.0.1.v201112150204-238534 (com.android.ide.eclipse.adt.feature.group 16.0.1.v201112150204-238534) requires ‘org.eclipse.wst.sse.core 0.0.0’ but it could not be found

This error cropped up while trying to install ADT Plugin for Eclipse on Ubuntu 11.10.

Trying to install Android SDK, I got an error from the SDK Manager :

Failed to fetch URL https://dl-ssl.google.com/android/repository/repository.xml, reason: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty

Solution to that is to:

sudo update-alternatives --config java

There are 2 choices for the alternative java (providing /usr/bin/java).

Selection    Path                                      Priority   Status

------------------------------------------------------------

* 0            /usr/lib/jvm/java-6-openjdk/jre/bin/java   1061      auto mode

1            /usr/lib/jvm/java-6-openjdk/jre/bin/java   1061      manual mode

2            /usr/lib/jvm/java-6-sun/jre/bin/java       63        manual mode
Press enter to keep the current choice[*], or type selection number: 1[/code]
Update on this: Did not work with the above...Anyone know a solution?
Joel G Mathew
Joel G Mathew, known in tech circles by the pseudonym Droidzone, is an opensource and programming enthusiast.
He is a full stack developer, whose favorite languages are currently Python and Vue.js. He is also fluent in Javascript, Flutter/Dart, Perl, PHP, SQL, C and bash shell scripting. He loves Linux, and can often be found tinkering with linux kernel code, and source code for GNU applications. He used to be an active developer on XDA forums, and his tinkered ROMS used to be very popular in the early 2000s.
His favorite pastime is grappling with GNU compilers, discovering newer Linux secrets, writing scripts, hacking roms, and programs (nothing illegal), reading, blogging. and testing out the latest gadgets.
When away from the tech world, Dr Joel G. Mathew is a practising ENT Surgeon, busy with surgeries and clinical practise.