package com.stringbuffer_;
import java.math.BigDecimal;
import java.util.Scanner;
public class StringBufferExercise01 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
if(scanner.hasNextBigDecimal()){
BigDecimal bd = scanner.nextBigDecimal();
System.out.println(bd);
String str = String.valueOf(bd);
System.out.println(str);
StringBuffer sb = new StringBuffer(str);
for (int j = sb.lastIndexOf(".")-3; j > 0 ; j-=3) {
sb=sb.insert(j,",");
}
System.out.println(sb);
}
scanner.close();
}
}
//主要练习StringBuffer类的常用方法,以及BigDecimal
练习——简单的规格化处理键盘接收的数
发布时间 2023-03-31 18:02:35作者: Q1uuuu