代码
package com.me.basic;
import java.math.BigDecimal;
import java.text.DecimalFormat;
public class ScientificCounting {
public static void main(String[] args) {
funcOne();
System.out.println("============");
funcTwo();
}
public static void funcOne(){
Double double1 = 12345678966.123456789;
DecimalFormat decimalFormat = new DecimalFormat("#,##0.00");
System.out.println(decimalFormat.format(double1));
System.out.println(double1);
}
public static void funcTwo(){
Double dd = 12345678966.123456789;
BigDecimal bigDecimal = new BigDecimal(dd.toString());
System.out.println(bigDecimal);
System.out.println(dd);
}
}
运行结果
12,345,678,966.12
1.2345678966123457E10
============
12345678966.123457
1.2345678966123457E10