[MattD]

Originally Posted by sjspry

Also, note that when you call "getInstance" of the AxisCamera, it initializes and returns a class the first time you do this. If you don't capture this class in a variable and keep it "alive" during the whole of your robot's run, it will get garbage collected and the thread it creates to relay information will be killed.

This is not true. AxisCamera.getInstance() will create a new instance of the AxisCamera class and return it the first time it is called. Any time after that, it returns the one instance that it already created. There is no destructor that kills the camera thread, and a reference to the singleton AxisCamera instance is always stored within the AxisCamera class in AxisCamera.m_instance. A call to AxisCamera.getInstance() will always return this instance.

public class AxisCamera implements ISensor{
    private static AxisCamera m_instance = null;
    
    ...

    public static synchronized AxisCamera getInstance() {
        if (m_instance == null) {
            m_instance = new AxisCamera();
        }
        return m_instance;
    }

The constructor calls the AxisCameraStart function that is part of the C++ library. That function starts up the PCVideoServer. Even if there was destruction of the AxisCamera object, it would not signal this thread to stop.

To get back to the original question:
Make sure the camera is configured per the instructions located here: http://www.usfirst.org/uploadedFiles...our_Camera.pdf

If there is any console output that you see before the program stops, posting that may be helpful.