What is the difference between a FixedThreadPool and ThreadPoolTaskExecutor?

oneCoderToRuleThemAll :

Is there a difference between configuring a Thread pool using the following configurations:

Executors.newFixedThreadPool(50);

versus doing:

ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(50);
executor.setThreadNamePrefix("thread-pool");
executor.initialize();

I am not interested in configuring the thread pool during runtime (which is I think the main driver for using ThreadPoolTaskExecutor).

Karol Dowbecki :

In your example Spring's ThreadPoolTaskExecutor will create a ThreadPoolExecutor with corePoolSize of 50, maxPoolSize of Integer.MAX_VALUE and keepAlive of 60 seconds.

Meanwhile Executors.newFixedThreadPool(50) will set both corePoolSize and maxPoolSize to 50 and keepAlive of 0 seconds (see Java source code).