Java 保持小数点后若干位的操作

234 views January 26, 2010 by 老李 
	DecimalFormat df2  = new DecimalFormat("###.00");

or: 

(double) (Math.round(sd3*100)/100.0);

 

09下高一期终语文-平均分 09下期终英语-平均分 09高一下期中考试-平均分
71.66666666666667 124.0 195.66666666666666

 

=>

09下高一期终语文-平均分 09下期终英语-平均分 09高一下期中考试-平均分
71.67 124.00 195.67
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