This research explains visualization of diagnostic system of 3D CAD data, IGES (Initial Graphics Exchange Specification), by using JNI(Java Native Interface) to connect between C++ and Java programming. The diagnostic system is to analyze IGES clearly by

This research explains visualization of diagnostic system of 3D CAD data IGES(Initial Graphics Exchange Specification) by using JNI (Java Native Interface). The diagnostic system is to analyze IGES clearly by identifying errors and anomalies with respect to the diagnosis of geometry and topology entity. The output of the system is IGES file including error information which can be visualized with different colors by several commercial visualization systems. The paper focuses on the visualization of the result IGES which can be extended to web based application over internet because the system is developed by JNI to connect between C++ and Java programming.