Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

dynamic dispatch

Choosing which override runs from the object's class while the program runs.

For an instance call, the JVM starts at the receiver's runtime class and walks up the superclass chain to the first class declaring the chosen signature; static, private and final methods are not dispatched.

Examples

  • Animal a = new Dog(); a.sound(); runs Dog's sound.

Read the full section →