JAVA AND ITS APPLICATIONS TO CRYSTALLOGRAPHY. John C. Huffman and John N. Huffman, Indiana University Molecular Structure Center, Chemistry Building, Indiana University, Bloomington, IN., 47405-4001

The Java programming language offers an ideal graphical interface for viewing crystallographic data on the World Wide Web. During the past year the Indiana University Molecular Structure Center (IUMSC) has installed a web based data server to allow convenient access to locally obtained crystallographic data files. In addition to having coordinate and other numeric data available in down-loadable files, Java applets being developed allow users to view the molecular structures as stick-figures, ball and stick, and space-filling representations. Three dimensional views are available as stereo-graphic pairs or red/green anaglyphs, and most modern workstations are powerful enough to allow smooth real-time rotation of the figures. Other software being developed allows the user to request publication quality figures from the server in several formats. After orienting and previewing using the Java applet, the server can be requested to generate an image file suitable for down-loading. The use of Java applets allows the server to become not only a convenient tool to store crystallographic data, but a significant aid in the interpretation and presentation of the results. The server is currently available at url: http:\www.iumsc.indiana.edu