Jframe content doesn't resize when content pane and canvas are re-sized. (Swing / AWT / SWT forum at Coderanch)
Building custom canvas module | Streamr Docs
Game loop and Animation
Java-Buddy: Save Canvas to PNG file
Screenshot overlay tool: A tool based on HTML Canvas, Selenium and Java libraries (java.awt, javax.imageio) | by Abhyuday Bharat | MiQ Tech and Analytics | Medium