Short description of MaintainJ Plugin 2.8: MaintainJ, an Eclipse plug-in, generates runtime UML sequence and class diagrams for a given use case, helping the users to quickly understand a complex Java application. MaintainJ logs runtime method execution sequence to a file and uses that trace file to render sequence and class diagrams. MaintainJ Instrumentation Wizard instruments a Java/J2EE application and MaintainJ UML Editor renders sequence and class diagram from the trace file.