HappyNewYear

Posted 2023-04-19 QuestionMark001

title: 新年快乐
cover: https://image.cha138.com/20230419/499bd040c7084654b51e65a1b6f33410.jpg
date: 2022-01-30 17:22:43
tags:
  - News
categories:
  - 拜年
copyright: true
language: zh-CN

新年快乐

Hello，这里是我的个人博客，祝大家在新的一年里：身体健康，万事如意。

Java_去除字符串空格

1 String ss = "    happy new year ";
2 System.out.println(ss + "------" + ss.length());
3 //"    happy new year ------16"
4 System.out.println(ss.trim() + "------" + ss.trim().length());
5 //"happy new year------14"
6 System.out.println(ss.replaceAll(" ", "") + "------" + ss.replaceAll(" ", "").length());
7 //"    happynewyear------13"
8 System.out.println(ss.replaceAll("\\s*", "") + "------" + ss.replaceAll("\\s*", "").length());
9 //"happynewyear------12"　　\s在正则里就表示空白符