Java calculation for progressbar
I'm trying to come up with the calculation for the progressbar but can not seem to. The progressbar has a value of 0.0 to 1.0. What would be the calculation formula for this? Example: If I am wanting to display something for 5 seconds then, in theory, that should be 0.20 5 times (0.20, 0.40, 0.60, 0.80, 1.0) to make 1.0 with each loop. But how would that look in the java code?

I'm trying to come up with the calculation for the progressbar but can not seem to.
The progressbar has a value of 0.0 to 1.0.
What would be the calculation formula for this?
Example: If I am wanting to display something for 5 seconds then, in theory, that should be 0.20 5 times (0.20, 0.40, 0.60, 0.80, 1.0) to make 1.0 with each loop. But how would that look in the java code?