  Debugging is an essential part of software maintenance and evolution since it
allows software developers to analyze program execution step by step.
Understanding a program is required to fix potential flaws, alleviate
bottlenecks, and implement new desired features. Thus, software developers
spend a large percentage of their time validating and debugging software,
resulting in high software maintenance and evolution cost. We aim to reduce
this cost by providing a novel visual debugging tool to software developers to
foster program comprehension during debugging. Our debugging tool visualizes
program execution information graphically as an object diagram and is fully
integrated into the popular Java development environment IntelliJ IDEA.
Moreover, the object diagram allows interactions to explore program execution
information in more detail. A demonstration of our tool is available at
https://www.youtube.com/watch?v=lU_OgotweRk.
