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String srt="abc?abc";
str.replaceAll("?", "#");
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Dangling meta character '?' near index 0
?
^
at java.util.regex.Pattern.error(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.util.regex.Pattern.<init>(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.lang.String.replaceAll(Unknown Source)
str.replaceAll("[?]", "#");
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/**
* Title: ConnectPool.java
* Description: Á¬½Ó³Ø¹ÜÀíÆ÷
* Copyright: Copyright (c) 2002/12/25
* Company:
* Author :
* Version 2.0
*/
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import java.sql.*;
import java.util.*;
import java.util.Date;
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¡¡¡¡public static void main(String[] args) {
¡¡¡¡String str1 = "str1";
¡¡¡¡String str2 = "str2";
¡¡¡¡String str3 = "str3";
¡¡¡¡str1.concat(str2);
¡¡¡¡System.out.println(str3.concat(str1));
¡¡¡¡}
¡¡¡¡}
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