Data conversion between Java and B-Prolog

The following table converts data from Java to Prolog and vice versa.

Java	Prolog
Integer	integer
Double	real
Long	integer
BigInteger	integer
String	atom
Object array	list
Object	$addr(I1,I2)

Notice that primitive data types in Java cannot be converted into Prolog.

The conversion between arrays and lists needs further explanation. A Java array of some type is converted into a list of elements of the corresponding converted type. For instance, an Integer array is converted into a list of integers. In contrast, a Prolog list, whatever type whose elements belong to, is converted into an array of Object type. When an array element is used as a specific type, it must be casted to the type.