Online Java compiler, visual debugger, and AI tutor - the only tool that lets you visually debug your Java code step-by-step (also debug
Python
,
JavaScript
,
C
, and
C++
code)
Here is a demo.
Scroll down
to compile and run your own code!
Write code in
Java
Visualize Execution
hide exited frames [default]
show all frames (Python)
inline primitives and try to nest objects
inline primitives, don't nest objects [default]
render all objects on the heap (Python/Java)
draw pointers as arrows [default]
use text labels for pointers