This performance-based certification
is for developers interested in demonstrating advanced proficiency
in the Java programming language using Java SE.
Some of the topics covered are: Thread handling and synchronization,
Swing (and AWT to the extent necessary to support Swing),
Standard file IO (java.io, not java.nio), Java Database Connectivity
(JDBC) and SQL, Java IDL API and CORBA.
Visit following link for overview of SCJD certification and
the Sun Java certification map: