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The Web Map Server Interface Specification, launched by the OpenGIS Consortium in the final part of the year 1999, proposes a standard framework for publish and interchange geographical information, increasing the possibilities of inter-operational capacity among GIS applications in the Internet. On the other hand, software implementation for the internet is highly conditioned by the growth and standardisation of Java as preferred Internet programming language. The authors illustrate an approach for the implementation of the web map server interface using Java as the programming language, in both in the server side to implement the map services of the specification, as well as in the client side, using Java and the more broaden HTML. The paper provides some inside of this experience and shows different examples of map clients accessing map services from one or more map servers fulfilling the OpenGIS specification.