jGRASP

jGRASP is a lightweight development environment, created specifically to provide automatic generation of software visualizations to improve the comprehensibility of software. jGRASP is implemented in Java and runs on all platforms with a Java Virtual Machine (Java version 1.5 or higher). jGRASP produces Control Structure Diagrams (CSDs) for Java, C, C++, Objective-C, Python, Ada, and VHDL; Complexity Profile Graphs (CPGs) for Java and Ada; UML class diagrams for Java; and has dynamic object viewers and a viewer canvas that works in conjunction with an integrated debugger and workbench for Java.

The viewers include a data structure identifier mechanism which recognizes objects that represent traditional data structures such as stacks, queues, linked lists, binary trees, and hash tables, and then displays them in an intuitive textbook-like presentation view.

If you are attempting to compile Java source files from an OneDrive folder on Windows 10, the compile may fail with a "not a file" message. You can correct this by turning off "Files on Demand" in the OneDrive settings if you have sufficient disk space for all your OneDrive files. Otherwise, you will need to copy the source files to a normal folder to work on them, then back to the OneDrive folder when done.

Note: Requires Java JRE.