Seven Concurrency Models in Seven Weeks

Day 3: On the Shoulders of Giants

As well as the enhanced locks we covered in day 2, java.util.concurrent contains a collection of general-purpose, high-performance, and thoroughly debugged concurrent data structures and utilities. Today we’ll see that more often than not, these prove to be a better choice than rolling our own solution.

Thread-Creation Redux

In day 1 we saw how to start threads, but it turns out that it rarely makes sense to create threads directly. Here, for example, is a very simple server that echoes whatever it’s sent:

​ 
​ 
​