Java学习路线-20：正则表达式

彭世瑜发布时间：2019-11-18 23:46:46 ，浏览量：2

第10 章：正则表达式 38 认识正则表达式

JDK >= 1.4 使用正则方便进行数据验证处理，复杂字符串修改

实现字符串转数字


class Demo {
    public static boolean isNumber(String temp){
        char[] chars = temp.toCharArray();
        for(char c : chars){
            if(c > '9' || c =n次
{n,m} 长度>=n and 长度


    
        
        
        
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[8192] Array and string offset access syntax with curly braces is deprecated /www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 59 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 35 行.
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[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 140 行.
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[8] Undefined variable: top_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 185 行.
    
    
        
    
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