初学java之大数处理

 import java.text.*;
 public class Gxjun
 {
 public static void main(String args[] )
 {
 int n=123456789;
 System.out.println("整数"+"按千分组号（带正好）");
 String s=String.format("%,+d",n);
 System.out.println(s);
 double number = 98765.6789 ;
 System.out.println(number+"格式化为整数7位,小数3位");
 s=String.format("%011.3f",number);
 System.out.println(s);
 }
 }