GNU Prolog for Java is an almost conforming implementation of ISO Prolog standard in Java. It implements almost all required predicates, but there are some minor problems which do not allow me to call it conforming. This package were never indended to be used as standalone system, it is a library which is designed to embeddable into Java applications which need Prolog to solve some tasks. The interpreter intended for applications where Prolog performs combinatory search and Java do rest.