You can use the Java API in stored procedures, in UDFs, and in SQL statements as extensions to the available built-in functions provided by SQL.
For example, the SQL function PI(*) returns the value for Pi. The Java API class java.lang.Math has a parallel field named PI that returns the same value. But java.lang.Math also has a field named E that returns the base of the natural logarithm, as well as a method that computes the remainder operation on two arguments as prescribed by the IEE754 standard.
