![schematic](https://i.stack.imgur.com/qcX81.png)

[simulate this circuit](/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fqcX81.png) – Schematic created using [CircuitLab](https://www.circuitlab.com/)

Can the Direction of current in an inductor in a closed circuit change instantaneously.
The circuit is in steady state for t<0. 
The solution says I(0-) = -0.4A and I(0+) = 0.4A
So, is the solution wrong or the direction really changed.