When should we use Java's Thread over Executor?

Question

Executor seems like a clean abstraction. When would you want to use Thread directly rather than rely on the more robust executor?

Answer 1

java.util.concurrent package provides executor interface and can be used to created thread.

The Executor interface provides a single method, execute, designed to be a drop-in replacement for a common thread-creation idiom. If r is a Runnable object, and e is an Executor object you can replace

(new Thread(r)).start();

with

e.execute(r);

Refer here