backgrounds tasks by swingworkers become sequential

Answer 1

Hi, you can perhaps have a look at this post.

One of the given solution is to execute the SwingWorker instances using your own executor Service. It seems that a change in jdk 1.6 update 18 changed the default behaviour.

Answer 2

The problem is, that all Swingworkers run on the same Background-Thread. When you want them to run concurrent you could add them to an Executor Service like this for example:

Executor executor = Executors.newCachedThreadPool();
executor.execute(yourSwingWorker);

Source: Oracle Forums