JProgressBar with double value
Hello i would like to know if i can extends a JProgressBar
to use double value for min max, instead o开发者_运维技巧f int.
Thank you.
If you know the bounds and precision of your values, it's quite easy to do with a wrapper. I've used this approach for a computationally intensive application where 1% equates to about 30 seconds. Showing a JProgressBar
with min=0
and max=100
didn't give enough feedback. Users thought the application was hung.
Solution: Scale the values
I had a float (0f - 1f) that represented the actual percent complete. By multiplied that by 10000 I got an integer range of 0 - 10000. I set up JPB with min=0 and max=10000.
Then just a call to setString(NumberFormat.getPercentInstance().format(value))
to display the formatted percent.
Sure you can, but for what purpose? How do you display a half percent?
You can however use the setString()-method to display the more exact value. Printing the String must be turned on using the setStringPainted()-method.
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