Use Java code to implement the number of decimal places to keep the _java

Copy Code code as follows:

Import java.text.*;
Import java.math.*;
public class Test
{
Public Test () {

Double A=savenumber (15.12312312,6);
System.out.println ("a ..." +a);
}
The number of digits to keep the decimal point
Number is the count to be processed, digit is the number of digits to keep
Public double savenumber (double number,int digit) {

NumberFormat ddf1=numberformat.getnumberinstance ();

Ddf1.setmaximumfractiondigits (digit);

String s= Ddf1.format (number);

Double num=double.parsedouble (s);

return Num;

}
public static void Main (String args[])
{
New Test ();


}
}