yyyyyyyyyyyyyyyyyyyy
博客园
首页
新随笔
联系
订阅
管理
公告
java去全半角空格,trim(), replaceAll(" +",""),replaceAll("\\s*", ""), replaceAll(" | ", "")
JAVA中去掉空格
1. String.trim()
trim()是去掉首尾空格
2.str.replace(" ", ""); 去掉所有空格,包括首尾、中间
String str = " hell o ";
String str2 = str.replaceAll(" ", "");
System.out.println(str2);
3.或者replaceAll(" +",""); 去掉所有空格
4.str = .replaceAll("\\s*", "");
可以替换大部分空白字符, 不限于空格
\s 可以匹配空格、制表符、换页符等空白字符的其中任意一个
java去掉全角空格和半角空格的方法,
需求1:将字符串转换成字符数组
String value = " 俞子东 ";
char[] val = new char[value.length()];
value.getChars(0, value.length(), val, 0);//字符串转换成字符数组
System.out.println(val.length)
需求2:将所有的全角空格和半角空格去掉
System.out.println(value.replaceAll(" | ", ""));
需求3:将字符串两边的半角空格、全角空格去掉(调用myTrim(value, " ");)
static String myTrim(String source, String toTrim) {//将字符串两边的半角空格、全角空格去掉,其他也可以
StringBuffer sb = new StringBuffer(source);
while (toTrim.indexOf(new Character(sb.charAt(0)).toString()) != -1) {
sb.deleteCharAt(0);
}
while (toTrim.indexOf(new Character(sb.charAt(sb.length() - 1))
.toString()) != -1) {
sb.deleteCharAt(sb.length() - 1);
}
return sb.toString();
}
完整代码:
package com.konglong.test;
public class TrimTest {
public static void main(String[] args) {
String value = " 俞子东 ";
char[] val = new char[value.length()];
value.getChars(0, value.length(), val, 0);//字符串转换成字符数组
System.out.println(val.length);
System.out.println(value.replaceAll(" | ", ""));
System.out.println(myTrim(value, " "));
}
static String myTrim(String source, String toTrim) {//将字符串两边的半角空格、全角空格去掉,其他也可以
StringBuffer sb = new StringBuffer(source);
while (toTrim.indexOf(new Character(sb.charAt(0)).toString()) != -1) {
sb.deleteCharAt(0);
}
while (toTrim.indexOf(new Character(sb.charAt(sb.length() - 1))
.toString()) != -1) {
sb.deleteCharAt(sb.length() - 1);
}
return sb.toString();
}
}
posted on
2015-12-01 00:03
xxxxxxxx1x2xxxxxxx
阅读(1782)
评论(0)
编辑
收藏
举报
指间灵动,快码加编
刷新页面返回顶部
|