Java Swing UI – Real-Time Shadow Casting Effect (Soft Shadows in Java2D)
Bring your Java Swing projects to life with real-time, soft shadow casting using pure Java2D!. In this tutorial, we’ll build a custom panel that casts dynamic, blurred shadows as the mouse moves — no external libraries needed.
Learn how to:
Set up a Swing JFrame and custom JPanel
Project shapes away from a light source
Apply blur with ConvolveOp for smooth shadow edges
Add gradient lighting for a modern UI look
Perfect for Java beginners and advanced devs who want to add eye-catching visual effects to their apps.
👉 Try the code yourself and experiment with multiple lights, colors, and shapes.
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