SQLJ is a language specification for using Java to write and execute static SQL statements as embedded SQL statements. SQLJ is made up of SQLJ Translator and SQLJ runtime libraries.

SQLJ Translator interprets an SQLJ source program, and generates a profile in which the Java source file and SQL information are stored. The user then runs a Java compiler to compile the Java source file and create a class file (executable file).

The SQLJ runtime libraries are used when the generated profile and class file are executed.