Java programs won't start when external screen is set as main

[MikoLone]

I had the same problem this morning. In my app, this java code threw a null pointer exception for this line of code.

GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().getBounds();

For some reason, when you have the main monitor set to one that is connected to the dock, getDefualtScreenDevice() returns null.

I was also using java 8.