问题
I have a short equation:
double compute,computed2;
compute=getminutes/60;
where getminutes is int and I want to set the equivalent of compute with 2 decimal places. 0.00 how can I format the equivalent with 2 decimal places?
Example:
compute=45/60 it should be 0.75
Here is my work:
DecimalFormat df2 = new DecimalFormat("00.00000");
double computed,computed2 = 00.000;
computed=60/getitbyminutes;
df2.format(computed);
computed2=computed-8;
df2.format(computed2);
System.out.printf("%1$.2f",computed);
System.out.println();
System.out.printf("%1$.2f",computed2);
the out put will be just like :
1.00
7.00
回答1:
Cast it to Double
compute=(Double)getminutes/60;
and then use DecimalFormat as mentioned by Peter.
回答2:
Just format the output the right way:
double d = 1.234567;
DecimalFormat df = new DecimalFormat("#.##");
System.out.print(df.format(d));
来源：https://stackoverflow.com/questions/17082115/set-double-format-with-2-decimal-places