Talk is cheap, Show me the code. -- by: Linus Torvalds,我来为大家讲解一下关于java如何四舍五入取整?跟着小编一起来看一看吧!
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java如何四舍五入取整
Talk is cheap, Show me the code. -- by: Linus Torvalds
使用DecimalFormat进行处理,代码如下:
double num = 12.3456;
// 保留两位小数,并四舍五入
DecimalFormat df = new DecimalFormat("#.##");
// format后是String类型,使用Double.valueOf转回 double
num = Double.valueOf(df.format(num));
System.out.println(num); // 12.35