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Making precisions in calculations with JSTL

 
Timothy Sam
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Hi guys! I'm having rounding off issues. Are there any equivalent of the Math class methods ceil, round and floor? It seems that fmt:number only outputs to a String. What if I still have to use it in my calculations? Last time I tried, fmt:number doesn't even accept an expressions ${} as a value! Any ideas guys?

Here is my code. The variables factor and percentage needs to be rounded off to the nearest integer during calculation.

 
Don't get me started about those stupid light bulbs.
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