This is a Java Programming test I created in 2011 to test junior programmers. A seasoned developer can complete this test in around 10 minutes. For interview candidates I usually allow 1 hour or more.
Overall the test is quite simple but there are a few things in it to trick people a bit.
To get started run:
./gradlew idea
or
./gradlew eclipse
Start with the com.chrisdail.devtest.StartHereMain.java. It has instructions on what to do.