Mogwee Executors contains a few classes designed to replace the executors built in to Java. Java’s standard executors silently fail if an uncaught RuntimeException is thrown. Even worse, a ScheduledExecutorService will silently cancel all future executions of a task that has such an exception.

While there are many simpler ways which seem like they should work (e.g., Thread.UncaughtExceptionHandler or creating a ThreadFactory that wraps a Runnable within another Runnable that’s got a try/catch), they don’t, mostly due to ScheduledExecutorService already having wrapped the Runnable before anything else can. If you think you have a simpler or better way of producing the same behavior, the TestExecutors unit test should provide a quick and easy way of checking whether the approach actually works.

In addition to exception logging, Mogwee Executors also ensures the threads created by executors it returns have some base name you specified when creating the executor. This is always a good idea and can be of great help when analyzing thread dumps.

Just use com.mogwee.executors.Executors in the same way you would use java.util.concurrent.Executors.

Copyright 2011 Ning, Inc.

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