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服务器之家 - 编程语言 - Java教程 - java 如何从字符串里面提取时间

java 如何从字符串里面提取时间

2021-12-31 12:59cpown Java教程

这篇文章主要介绍了java实现从字符串里面提取时间的方式,具有很好的参考价值,希望对大家有所帮助。如有错误或未考虑完全的地方,望不吝赐教

如何从字符串里面提取时间

今天接到一个需求,需要从一段带有时间串的字符串里面提取出时间保存。

"PDFS(iZh9k5gurgwcwpZ) 2020-01-01 21:27:36.560 >订单编号:1112233 提交订单成功! 跟踪号:待取跟踪号 内部单号:2342244"

需要从上面数据中心提取出 2020-01-01 21:27:36要怎么操作呢?

我们可以使用正则表达式

对时间串进行提取,并处理,代码如下:

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package com.epean.trade.framework.util;
import org.apache.commons.lang.time.DateFormatUtils;
import org.apache.commons.lang.time.DateUtils;
import java.text.ParseException;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
 * Created by chpeng on 2020/08/18 0008.
 */
public class StringDateUtils {
    /**
     *
     * @Description: 从字符串中截取出正确的时间
     * @param stringTime
     * @return:
     * @throws
     */
    public static Date cutDate(String stringTime) {
        String regs[] = { "\\d{4}年\\d{2}月\\d{2}日\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{4}年\\d{2}月\\d{2}日\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{2}时\\d{2}分",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}时\\d{2}分",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{1}时\\d{2}分",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}时\\d{2}分",
                "\\d{4}年\\d{2}月\\d{2}日\\d{2}时\\d{2}分",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{2}时",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{1}时",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}时",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{1}时",
                "\\d{4}年\\d{2}月\\d{2}日\\d{2}时", "\\d{4}年\\d{2}月\\d{2}日",
                "\\d{4}年\\d{2}月\\d{1}日", "\\d{4}年\\d{1}月\\d{2}日",
                "\\d{4}年\\d{1}月\\d{1}日",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{2}:\\d{1}:\\d{2}",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}:\\d{1}:\\d{2}",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}年\\d{2}月\\d{2}日\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{2}:\\d{2}",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{1}:\\d{2}",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}:\\d{2}",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{1}:\\d{2}",
                "\\d{4}年\\d{2}月\\d{2}日\\d{2}:\\d{2}",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{2}",
                "\\d{4}年\\d{2}月\\d{2}日\\s\\d{1}",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{2}",
                "\\d{4}年\\d{1}月\\d{2}日\\s\\d{1}",
                "\\d{4}年\\d{2}月\\d{2}日\\d{2}",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{2}", "\\d{4}-\\d{2}-\\d{2}",
                "\\d{4}-\\d{2}-\\d{1}", "\\d{4}-\\d{1}-\\d{2}",
                "\\d{4}-\\d{1}-\\d{1}",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{4}-\\d{1}-\\d{1}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{2}时",
                "\\d{4}-\\d{2}-\\d{2}\\s\\d{1}时",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{2}时",
                "\\d{4}-\\d{1}-\\d{2}\\s\\d{1}时", "\\d{4}.\\d{2}.\\d{2}",
                "\\d{4}.\\d{2}.\\d{1}", "\\d{4}.\\d{1}.\\d{2}",
                "\\d{4}.\\d{1}.\\d{1}",
                "\\d{4}.\\d{2}.\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}.\\d{2}.\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{4}.\\d{1}.\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}.\\d{1}.\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{4}.\\d{1}.\\d{1}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{4}.\\d{2}.\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{4}.\\d{2}.\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{4}.\\d{1}.\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{4}.\\d{1}.\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{4}.\\d{2}.\\d{2}\\s\\d{2}",
                "\\d{4}.\\d{2}.\\d{2}\\s\\d{1}",
                "\\d{4}.\\d{1}.\\d{2}\\s\\d{2}",
                "\\d{4}.\\d{1}.\\d{2}\\s\\d{1}",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{2}时",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{1}时",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{2}时",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{1}时",
                "\\d{4}/\\d{2}/\\d{2}",
                "\\d{4}/\\d{2}/\\d{1}",
                "\\d{4}/\\d{1}/\\d{2}",
                "\\d{4}/\\d{1}/\\d{1}",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{2}",
                "\\d{4}/\\d{2}/\\d{2}\\s\\d{1}",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{2}",
                "\\d{4}/\\d{1}/\\d{2}\\s\\d{1}",
                "\\d{2}月\\d{2}日\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{2}月\\d{2}日\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{1}月\\d{2}日\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{1}月\\d{2}日\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{2}月\\d{2}日\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{2}月\\d{2}日\\s\\d{2}时\\d{2}分",
                "\\d{1}月\\d{2}日\\s\\d{2}时\\d{2}分",
                "\\d{1}月\\d{2}日\\s\\d{1}时\\d{2}分",
                "\\d{1}月\\d{2}日\\s\\d{2}时\\d{2}分",
                "\\d{2}月\\d{2}日\\d{2}时\\d{2}分",
                "\\d{2}月\\d{2}日\\s\\d{2}时",
                "\\d{2}月\\d{2}日\\s\\d{1}时",
                "\\d{1}月\\d{2}日\\s\\d{2}时",
                "\\d{1}月\\d{2}日\\s\\d{1}时",
                "\\d{2}月\\d{2}日\\d{2}时", "\\d{4}年\\d{2}月\\d{2}日",
                "\\d{2}月\\d{1}日", "\\d{4}年\\d{1}月\\d{2}日",
                "\\d{1}月\\d{1}日",
                "\\d{2}月\\d{2}日\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{2}月\\d{2}日\\s\\d{2}:\\d{1}:\\d{2}",
                "\\d{1}月\\d{2}日\\s\\d{2}:\\d{1}:\\d{2}",
                "\\d{1}月\\d{2}日\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{2}月\\d{2}日\\d{2}:\\d{2}:\\d{2}",
                "\\d{2}月\\d{2}日\\s\\d{2}:\\d{2}",
                "\\d{2}月\\d{2}日\\s\\d{1}:\\d{2}",
                "\\d{1}月\\d{2}日\\s\\d{2}:\\d{2}",
                "\\d{1}月\\d{2}日\\s\\d{1}:\\d{2}",
                "\\d{2}月\\d{2}日\\d{2}:\\d{2}",
                "\\d{2}月\\d{2}日\\s\\d{2}",
                "\\d{2}月\\d{2}日\\s\\d{1}",
                "\\d{1}月\\d{2}日\\s\\d{2}",
                "\\d{1}月\\d{2}日\\s\\d{1}",
                "\\d{2}月\\d{2}日\\d{2}",
                "\\d{2}-\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{2}-\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{1}-\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{1}-\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{2}-\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{2}-\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{2}-\\d{2}\\s\\d{2}", "\\d{4}-\\d{2}-\\d{2}",
                "\\d{2}-\\d{1}", "\\d{4}-\\d{1}-\\d{2}",
                "\\d{1}-\\d{1}",
                "\\d{2}-\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{2}-\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{1}-\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{1}-\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{1}-\\d{1}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{2}-\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{2}-\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{1}-\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{1}-\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{2}-\\d{2}\\s\\d{2}时",
                "\\d{2}-\\d{2}\\s\\d{1}时",
                "\\d{1}-\\d{2}\\s\\d{2}时",
                "\\d{1}-\\d{2}\\s\\d{1}时", "\\d{4}.\\d{2}.\\d{2}",
                "\\d{2}.\\d{1}", "\\d{4}.\\d{1}.\\d{2}",
                "\\d{1}.\\d{1}",
                "\\d{2}.\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{2}.\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{1}.\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{1}.\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{1}.\\d{1}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{2}.\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{2}.\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{1}.\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{1}.\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{2}.\\d{2}\\s\\d{2}",
                "\\d{2}.\\d{2}\\s\\d{1}",
                "\\d{1}.\\d{2}\\s\\d{2}",
                "\\d{1}.\\d{2}\\s\\d{1}",
                "\\d{2}/\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{2}/\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{1}/\\d{2}\\s\\d{2}时\\d{2}分\\d{2}秒",
                "\\d{1}/\\d{2}\\s\\d{1}时\\d{2}分\\d{2}秒",
                "\\d{2}/\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{2}/\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{1}/\\d{2}\\s\\d{2}时\\d{2}分",
                "\\d{1}/\\d{2}\\s\\d{1}时\\d{2}分",
                "\\d{2}/\\d{2}\\s\\d{2}时",
                "\\d{2}/\\d{2}\\s\\d{1}时",
                "\\d{1}/\\d{2}\\s\\d{2}时",
                "\\d{1}/\\d{2}\\s\\d{1}时",
                "\\d{2}/\\d{2}",
                "\\d{2}/\\d{1}",
                "\\d{1}/\\d{2}",
                "\\d{1}/\\d{1}",
                "\\d{2}/\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{2}/\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{1}/\\d{2}\\s\\d{2}:\\d{2}:\\d{2}",
                "\\d{1}/\\d{2}\\s\\d{1}:\\d{2}:\\d{2}",
                "\\d{2}/\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{2}/\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{1}/\\d{2}\\s\\d{2}:\\d{2}",
                "\\d{1}/\\d{2}\\s\\d{1}:\\d{2}",
                "\\d{2}/\\d{2}\\s\\d{2}",
                "\\d{2}/\\d{2}\\s\\d{1}",
                "\\d{1}/\\d{2}\\s\\d{2}",
                "\\d{1}/\\d{2}\\s\\d{1}",
        };
        String str = "";
        Date date = null;
        for (String reg : regs) {
            String temp = match(reg, stringTime);
            if (temp.length() > str.length()) {
                str = temp;
                if (!"".equals(str)) {
                    date = formatDate(str);
                }
            }
        }
        return date;
    }
    /**
     *
     * @Description: 把String格式的时间转化为date
     * @param stringTime
     * @return:
     * @throws
     */
    public static Date formatDate(String stringTime) {
        Date date = null;
        if (StringUtils.isNotBlank(stringTime)) {
            String[] pattern = new String[] { "yyyy年MM月dd日HH时mm分ss秒",
                    "yyyy年MM月dd日 HH时mm分ss秒", "yyyy年MM月dd日HH时mm分",
                    "yyyy年MM月dd日 HH时mm分", "yyyy年MM月dd日 HH时", "yyyy年MM月dd日HH时",
                    "yyyy年MM月dd日", "yyyy年MM月dd日HH:mm:ss",
                    "yyyy年MM月dd日 HH:mm:ss", "yyyy年MM月dd日HH:mm",
                    "yyyy年MM月dd日 HH:mm", "yyyy年MM月dd日 HH", "yyyy年MM月dd日HH",
                    "yyyy-MM-dd HH时mm分ss秒", "yyyy-MM-dd HH时mm分",
                    "yyyy-MM-dd HH时", "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss",
                    "yyyy-MM-dd HH:mm", "yyyy-MM-dd HH",
                    "yyyy/MM/dd HH时mm分ss秒", "yyyy/MM/dd HH时mm分",
                    "yyyy/MM/dd HH时", "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss",
                    "yyyy/MM/dd HH:mm", "yyyy/MM/dd HH", "yyyy.MM.dd HH:mm:ss",
                    "yyyy.MM.dd HH:mm", "yyyy.MM.dd HH", "yyyy.MM.dd",
                    "yyyyMMdd", };
            try {
                date = DateUtils.parseDate(stringTime, pattern);
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return date;
    }
    public static String match(String reg, String stringTime) {
        Pattern p = Pattern.compile(reg);
        Matcher m = p.matcher(stringTime);
        String s = "";
        if (m.find()) {
            s += m.group();
        }
        return s;
    }
    /**
     * 格式化
     * @Title: DateToString
     * @Description:
     * @param time
     * @return:
     * @throws
     */
    public static String DateToString(Date time) {
        String newDate = DateFormatUtils.format(time,"yyyy-MM-dd HH:mm:ss");
        return newDate;
    }
    
    public static void main(String[] args) {
        String stringTime = "PDFS(iZh9k5gurgwcwpZ) 2020-01-01 21:27:36.560 >订单编号:1112233   提交订单成功!   跟踪号:待取跟踪号   内部单号:2342244";
        Date date = cutDate(stringTime);
        System.out.println(date);
        System.out.println(DateToString(date));
    }
}

我们测试一下:

java 如何从字符串里面提取时间

没问题的。

从字符串中提取年份,要求输出1000-4999之间的所有年份

正则表达式

常用正则表达式:

  • \d : 数字字符匹配。等效于 [0-9]
  • \D : 非数字字符匹配。等效于 [^0-9]。
  • {n} : n为非负整数,正好匹配n次
  • {n,} : n为非负整数,至少匹配n次
  • [a-z]: 字符范围。匹配指定范围内的任何字符,例如,"[a-z]"匹配"a"到"z"范围内的任何小写字母。
  • [^a-z]: 反向范围字符。匹配不在指定的范围内的任何字符。例如,"[^a-z]"匹配任何不在"a"到"z"范围内的任何字符。
  • \ : 将下一字符标记为特殊字符、文本、反向引用或八进制转义符
  • ^ : 匹配输入字符串开始的位置
  • $ : 匹配输入字符串结尾的位置。
  • * : 零次或多次匹配前面的字符或子表达式。例如,zo* 匹配"z"和"zoo"。* 等效于 {0,}
  • +: 一次或多次匹配前面的字符或子表达式。例如,"zo+"与"zo"和"zoo"匹配,但与"z"不匹配。+ 等效于 {1,}。
  • ?: 零次或一次匹配前面的字符或子表达式。例如,"do(es)?"匹配"do"或"does"中的"do"。? 等效于 {0,1}。
?
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import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class JingDong {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        String reg = "\\D[1-4]\\d{3}\\D";//eg:a2019a、a2019、2019a
      // 前面不能是数字,后面也不能是数字
        str = str +"a";
        str = "a" + str;
        Pattern p = Pattern.compile(reg);
        Matcher matcher = p.matcher(str);
       while(matcher.find()){
            System.out.print(matcher.group(0).substring(1,5) + " ");
        }
    }
    public static boolean isNum(char a){
        if(Character.isDigit(a)){
            return true;
        }else
            return false;
    }
}

传统匹配:

?
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import java.util.*;
public class JingDong {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
          String str = sc.nextLine();
        if(str.length()<=2000){
            String out = "";
            for (int i = 0; i < str.length()-1;) {
                if(isNum(str.charAt(i) )&& Integer.parseInt(String.valueOf(str.charAt(i))) <=4 && Integer.parseInt(String.valueOf(str.charAt(i)))>=1){
                    if(isNum(str.charAt(i+1))){
                        if(isNum(str.charAt(i+2))){
                            if(isNum(str.charAt(i+3))){
                                if (!isNum(str.charAt(i+4))){
                                    out += str.substring(i,i+4);
                                    out += " ";
                                    i+=4;
                                }
                                i+=4;
                            }else
                            i++;
                        }else
                         i++;
                    }else
                        i++;
                }else
                    i++;
            }
            System.out.println(out);
        }
    public static boolean isNum(char a){
        if(Character.isDigit(a)){
            return true;
        }else
            return false;
    }
}

以上为个人经验,希望能给大家一个参考,也希望大家多多支持服务器之家。

原文链接:https://blog.csdn.net/flycp/article/details/108141694

延伸 · 阅读

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